Image gallery thumbnail size with Bootstrap 4











up vote
0
down vote

favorite












I have a very simple responsive image gallery with 6 thumbnails only. In large and medium devices it shows perfectly. However, in mobile view, the thumbnails become way too small. If I add padding, the side margins "break" and they are no longer aligned. Is there a way to make them a bit bigger without "breaking" the side margins? I've posted images so it's easier to understand.



In the image below you can see that the side margins are aligned, but the thumbnails are too small.



This is what I want to achieve



And below you can see what happens when I add padding. The thumbnails are bigger, but the side margins are no longer aligned.



enter image description here






.container {
max-width: 98%;
margin: 0 auto;
}

.image-container {
background-color: #ffffff;
padding: 10px;
}

.main-image-container img {
max-width: 100%;
height: auto;
}

.thumbnail-image-container img {
max-width: 100%;
height: auto;
}

<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">

<div class="container mt-4">
<div class="row">

<div class="col-lg-7 image-container">
<div class="row">
<div class="col-12 main-image-container img-fluid">
<img src="https://placeholdit.co//i/1280x720?&text=Test">
</div>
</div>
<div class="row pt-2">
<div class="col-2 thumbnail-image-container img-fluid">
<img src="https://placeholdit.co//i/1280x720?&text=Test">
</div>
<div class="col-2 thumbnail-image-container img-fluid">
<img src="https://placeholdit.co//i/1280x720?&text=Test">
</div>
<div class="col-2 thumbnail-image-container img-fluid">
<img src="https://placeholdit.co//i/1280x720?&text=Test">
</div>
<div class="col-2 thumbnail-image-container img-fluid">
<img src="https://placeholdit.co//i/1280x720?&text=Test">
</div>
<div class="col-2 thumbnail-image-container img-fluid">
<img src="https://placeholdit.co//i/1280x720?&text=Test">
</div>
<div class="col-2 thumbnail-image-container img-fluid">
<img src="https://placeholdit.co//i/1280x720?&text=Test">
</div>


</div>
</div>












share|improve this question


























    up vote
    0
    down vote

    favorite












    I have a very simple responsive image gallery with 6 thumbnails only. In large and medium devices it shows perfectly. However, in mobile view, the thumbnails become way too small. If I add padding, the side margins "break" and they are no longer aligned. Is there a way to make them a bit bigger without "breaking" the side margins? I've posted images so it's easier to understand.



    In the image below you can see that the side margins are aligned, but the thumbnails are too small.



    This is what I want to achieve



    And below you can see what happens when I add padding. The thumbnails are bigger, but the side margins are no longer aligned.



    enter image description here






    .container {
    max-width: 98%;
    margin: 0 auto;
    }

    .image-container {
    background-color: #ffffff;
    padding: 10px;
    }

    .main-image-container img {
    max-width: 100%;
    height: auto;
    }

    .thumbnail-image-container img {
    max-width: 100%;
    height: auto;
    }

    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">

    <div class="container mt-4">
    <div class="row">

    <div class="col-lg-7 image-container">
    <div class="row">
    <div class="col-12 main-image-container img-fluid">
    <img src="https://placeholdit.co//i/1280x720?&text=Test">
    </div>
    </div>
    <div class="row pt-2">
    <div class="col-2 thumbnail-image-container img-fluid">
    <img src="https://placeholdit.co//i/1280x720?&text=Test">
    </div>
    <div class="col-2 thumbnail-image-container img-fluid">
    <img src="https://placeholdit.co//i/1280x720?&text=Test">
    </div>
    <div class="col-2 thumbnail-image-container img-fluid">
    <img src="https://placeholdit.co//i/1280x720?&text=Test">
    </div>
    <div class="col-2 thumbnail-image-container img-fluid">
    <img src="https://placeholdit.co//i/1280x720?&text=Test">
    </div>
    <div class="col-2 thumbnail-image-container img-fluid">
    <img src="https://placeholdit.co//i/1280x720?&text=Test">
    </div>
    <div class="col-2 thumbnail-image-container img-fluid">
    <img src="https://placeholdit.co//i/1280x720?&text=Test">
    </div>


    </div>
    </div>












    share|improve this question
























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      I have a very simple responsive image gallery with 6 thumbnails only. In large and medium devices it shows perfectly. However, in mobile view, the thumbnails become way too small. If I add padding, the side margins "break" and they are no longer aligned. Is there a way to make them a bit bigger without "breaking" the side margins? I've posted images so it's easier to understand.



      In the image below you can see that the side margins are aligned, but the thumbnails are too small.



      This is what I want to achieve



      And below you can see what happens when I add padding. The thumbnails are bigger, but the side margins are no longer aligned.



      enter image description here






      .container {
      max-width: 98%;
      margin: 0 auto;
      }

      .image-container {
      background-color: #ffffff;
      padding: 10px;
      }

      .main-image-container img {
      max-width: 100%;
      height: auto;
      }

      .thumbnail-image-container img {
      max-width: 100%;
      height: auto;
      }

      <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">

      <div class="container mt-4">
      <div class="row">

      <div class="col-lg-7 image-container">
      <div class="row">
      <div class="col-12 main-image-container img-fluid">
      <img src="https://placeholdit.co//i/1280x720?&text=Test">
      </div>
      </div>
      <div class="row pt-2">
      <div class="col-2 thumbnail-image-container img-fluid">
      <img src="https://placeholdit.co//i/1280x720?&text=Test">
      </div>
      <div class="col-2 thumbnail-image-container img-fluid">
      <img src="https://placeholdit.co//i/1280x720?&text=Test">
      </div>
      <div class="col-2 thumbnail-image-container img-fluid">
      <img src="https://placeholdit.co//i/1280x720?&text=Test">
      </div>
      <div class="col-2 thumbnail-image-container img-fluid">
      <img src="https://placeholdit.co//i/1280x720?&text=Test">
      </div>
      <div class="col-2 thumbnail-image-container img-fluid">
      <img src="https://placeholdit.co//i/1280x720?&text=Test">
      </div>
      <div class="col-2 thumbnail-image-container img-fluid">
      <img src="https://placeholdit.co//i/1280x720?&text=Test">
      </div>


      </div>
      </div>












      share|improve this question













      I have a very simple responsive image gallery with 6 thumbnails only. In large and medium devices it shows perfectly. However, in mobile view, the thumbnails become way too small. If I add padding, the side margins "break" and they are no longer aligned. Is there a way to make them a bit bigger without "breaking" the side margins? I've posted images so it's easier to understand.



      In the image below you can see that the side margins are aligned, but the thumbnails are too small.



      This is what I want to achieve



      And below you can see what happens when I add padding. The thumbnails are bigger, but the side margins are no longer aligned.



      enter image description here






      .container {
      max-width: 98%;
      margin: 0 auto;
      }

      .image-container {
      background-color: #ffffff;
      padding: 10px;
      }

      .main-image-container img {
      max-width: 100%;
      height: auto;
      }

      .thumbnail-image-container img {
      max-width: 100%;
      height: auto;
      }

      <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">

      <div class="container mt-4">
      <div class="row">

      <div class="col-lg-7 image-container">
      <div class="row">
      <div class="col-12 main-image-container img-fluid">
      <img src="https://placeholdit.co//i/1280x720?&text=Test">
      </div>
      </div>
      <div class="row pt-2">
      <div class="col-2 thumbnail-image-container img-fluid">
      <img src="https://placeholdit.co//i/1280x720?&text=Test">
      </div>
      <div class="col-2 thumbnail-image-container img-fluid">
      <img src="https://placeholdit.co//i/1280x720?&text=Test">
      </div>
      <div class="col-2 thumbnail-image-container img-fluid">
      <img src="https://placeholdit.co//i/1280x720?&text=Test">
      </div>
      <div class="col-2 thumbnail-image-container img-fluid">
      <img src="https://placeholdit.co//i/1280x720?&text=Test">
      </div>
      <div class="col-2 thumbnail-image-container img-fluid">
      <img src="https://placeholdit.co//i/1280x720?&text=Test">
      </div>
      <div class="col-2 thumbnail-image-container img-fluid">
      <img src="https://placeholdit.co//i/1280x720?&text=Test">
      </div>


      </div>
      </div>








      .container {
      max-width: 98%;
      margin: 0 auto;
      }

      .image-container {
      background-color: #ffffff;
      padding: 10px;
      }

      .main-image-container img {
      max-width: 100%;
      height: auto;
      }

      .thumbnail-image-container img {
      max-width: 100%;
      height: auto;
      }

      <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">

      <div class="container mt-4">
      <div class="row">

      <div class="col-lg-7 image-container">
      <div class="row">
      <div class="col-12 main-image-container img-fluid">
      <img src="https://placeholdit.co//i/1280x720?&text=Test">
      </div>
      </div>
      <div class="row pt-2">
      <div class="col-2 thumbnail-image-container img-fluid">
      <img src="https://placeholdit.co//i/1280x720?&text=Test">
      </div>
      <div class="col-2 thumbnail-image-container img-fluid">
      <img src="https://placeholdit.co//i/1280x720?&text=Test">
      </div>
      <div class="col-2 thumbnail-image-container img-fluid">
      <img src="https://placeholdit.co//i/1280x720?&text=Test">
      </div>
      <div class="col-2 thumbnail-image-container img-fluid">
      <img src="https://placeholdit.co//i/1280x720?&text=Test">
      </div>
      <div class="col-2 thumbnail-image-container img-fluid">
      <img src="https://placeholdit.co//i/1280x720?&text=Test">
      </div>
      <div class="col-2 thumbnail-image-container img-fluid">
      <img src="https://placeholdit.co//i/1280x720?&text=Test">
      </div>


      </div>
      </div>





      .container {
      max-width: 98%;
      margin: 0 auto;
      }

      .image-container {
      background-color: #ffffff;
      padding: 10px;
      }

      .main-image-container img {
      max-width: 100%;
      height: auto;
      }

      .thumbnail-image-container img {
      max-width: 100%;
      height: auto;
      }

      <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">

      <div class="container mt-4">
      <div class="row">

      <div class="col-lg-7 image-container">
      <div class="row">
      <div class="col-12 main-image-container img-fluid">
      <img src="https://placeholdit.co//i/1280x720?&text=Test">
      </div>
      </div>
      <div class="row pt-2">
      <div class="col-2 thumbnail-image-container img-fluid">
      <img src="https://placeholdit.co//i/1280x720?&text=Test">
      </div>
      <div class="col-2 thumbnail-image-container img-fluid">
      <img src="https://placeholdit.co//i/1280x720?&text=Test">
      </div>
      <div class="col-2 thumbnail-image-container img-fluid">
      <img src="https://placeholdit.co//i/1280x720?&text=Test">
      </div>
      <div class="col-2 thumbnail-image-container img-fluid">
      <img src="https://placeholdit.co//i/1280x720?&text=Test">
      </div>
      <div class="col-2 thumbnail-image-container img-fluid">
      <img src="https://placeholdit.co//i/1280x720?&text=Test">
      </div>
      <div class="col-2 thumbnail-image-container img-fluid">
      <img src="https://placeholdit.co//i/1280x720?&text=Test">
      </div>


      </div>
      </div>






      html5 css3 bootstrap-4 image-gallery






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 9 at 22:02









      Paula

      1059




      1059
























          1 Answer
          1






          active

          oldest

          votes

















          up vote
          0
          down vote



          accepted










          One solution would be adding the same padding to all col-* classes. Bootstrap have padding classes named p-*. Next example added the p-1 classes to main-image-container and thumbnail-image-container elements.






          .container {
          max-width: 98%;
          margin: 0 auto;
          }

          .image-container {
          background-color: #ffffff;
          padding: 10px;
          }

          .main-image-container img {
          max-width: 100%;
          height: auto;
          }

          .thumbnail-image-container img {
          max-width: 100%;
          height: auto;
          }

          <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">

          <div class="container mt-4">
          <div class="row">

          <div class="col-lg-7 image-container">

          <div class="row">
          <div class="col-12 p-1 main-image-container img-fluid">
          <img src="https://placeholdit.co//i/1280x720?&text=Test">
          </div>
          </div>

          <div class="row pt-2">
          <div class="col-2 p-1 thumbnail-image-container img-fluid">
          <img src="https://placeholdit.co//i/1280x720?&text=Test">
          </div>
          <div class="col-2 p-1 thumbnail-image-container img-fluid">
          <img src="https://placeholdit.co//i/1280x720?&text=Test">
          </div>
          <div class="col-2 p-1 thumbnail-image-container img-fluid">
          <img src="https://placeholdit.co//i/1280x720?&text=Test">
          </div>
          <div class="col-2 p-1 thumbnail-image-container img-fluid">
          <img src="https://placeholdit.co//i/1280x720?&text=Test">
          </div>
          <div class="col-2 p-1 thumbnail-image-container img-fluid">
          <img src="https://placeholdit.co//i/1280x720?&text=Test">
          </div>
          <div class="col-2 p-1 thumbnail-image-container img-fluid">
          <img src="https://placeholdit.co//i/1280x720?&text=Test">
          </div>
          </div>

          </div>

          </div>
          </div>





          A second solution will be splitting the thumbnails into two rows using the right col-* classes. Like on next example:






          .container {
          max-width: 98%;
          margin: 0 auto;
          }

          .image-container {
          background-color: #ffffff;
          padding: 10px;
          }

          .main-image-container img {
          max-width: 100%;
          height: auto;
          }

          .thumbnail-image-container img {
          max-width: 100%;
          height: auto;
          }

          <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">

          <div class="container mt-4">
          <div class="row">

          <div class="col-lg-7 image-container">

          <div class="row">
          <div class="col-12 main-image-container img-fluid">
          <img src="https://placeholdit.co//i/1280x720?&text=Test">
          </div>
          </div>

          <div class="row pt-1">
          <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
          <img src="https://placeholdit.co//i/1280x720?&text=Test">
          </div>
          <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
          <img src="https://placeholdit.co//i/1280x720?&text=Test">
          </div>
          <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
          <img src="https://placeholdit.co//i/1280x720?&text=Test">
          </div>
          <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
          <img src="https://placeholdit.co//i/1280x720?&text=Test">
          </div>
          <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
          <img src="https://placeholdit.co//i/1280x720?&text=Test">
          </div>
          <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
          <img src="https://placeholdit.co//i/1280x720?&text=Test">
          </div>
          </div>

          </div>

          </div>
          </div>








          share|improve this answer























            Your Answer






            StackExchange.ifUsing("editor", function () {
            StackExchange.using("externalEditor", function () {
            StackExchange.using("snippets", function () {
            StackExchange.snippets.init();
            });
            });
            }, "code-snippets");

            StackExchange.ready(function() {
            var channelOptions = {
            tags: "".split(" "),
            id: "1"
            };
            initTagRenderer("".split(" "), "".split(" "), channelOptions);

            StackExchange.using("externalEditor", function() {
            // Have to fire editor after snippets, if snippets enabled
            if (StackExchange.settings.snippets.snippetsEnabled) {
            StackExchange.using("snippets", function() {
            createEditor();
            });
            }
            else {
            createEditor();
            }
            });

            function createEditor() {
            StackExchange.prepareEditor({
            heartbeatType: 'answer',
            convertImagesToLinks: true,
            noModals: true,
            showLowRepImageUploadWarning: true,
            reputationToPostImages: 10,
            bindNavPrevention: true,
            postfix: "",
            imageUploader: {
            brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
            contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
            allowUrls: true
            },
            onDemand: true,
            discardSelector: ".discard-answer"
            ,immediatelyShowMarkdownHelp:true
            });


            }
            });














             

            draft saved


            draft discarded


















            StackExchange.ready(
            function () {
            StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53233822%2fimage-gallery-thumbnail-size-with-bootstrap-4%23new-answer', 'question_page');
            }
            );

            Post as a guest















            Required, but never shown

























            1 Answer
            1






            active

            oldest

            votes








            1 Answer
            1






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes








            up vote
            0
            down vote



            accepted










            One solution would be adding the same padding to all col-* classes. Bootstrap have padding classes named p-*. Next example added the p-1 classes to main-image-container and thumbnail-image-container elements.






            .container {
            max-width: 98%;
            margin: 0 auto;
            }

            .image-container {
            background-color: #ffffff;
            padding: 10px;
            }

            .main-image-container img {
            max-width: 100%;
            height: auto;
            }

            .thumbnail-image-container img {
            max-width: 100%;
            height: auto;
            }

            <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">

            <div class="container mt-4">
            <div class="row">

            <div class="col-lg-7 image-container">

            <div class="row">
            <div class="col-12 p-1 main-image-container img-fluid">
            <img src="https://placeholdit.co//i/1280x720?&text=Test">
            </div>
            </div>

            <div class="row pt-2">
            <div class="col-2 p-1 thumbnail-image-container img-fluid">
            <img src="https://placeholdit.co//i/1280x720?&text=Test">
            </div>
            <div class="col-2 p-1 thumbnail-image-container img-fluid">
            <img src="https://placeholdit.co//i/1280x720?&text=Test">
            </div>
            <div class="col-2 p-1 thumbnail-image-container img-fluid">
            <img src="https://placeholdit.co//i/1280x720?&text=Test">
            </div>
            <div class="col-2 p-1 thumbnail-image-container img-fluid">
            <img src="https://placeholdit.co//i/1280x720?&text=Test">
            </div>
            <div class="col-2 p-1 thumbnail-image-container img-fluid">
            <img src="https://placeholdit.co//i/1280x720?&text=Test">
            </div>
            <div class="col-2 p-1 thumbnail-image-container img-fluid">
            <img src="https://placeholdit.co//i/1280x720?&text=Test">
            </div>
            </div>

            </div>

            </div>
            </div>





            A second solution will be splitting the thumbnails into two rows using the right col-* classes. Like on next example:






            .container {
            max-width: 98%;
            margin: 0 auto;
            }

            .image-container {
            background-color: #ffffff;
            padding: 10px;
            }

            .main-image-container img {
            max-width: 100%;
            height: auto;
            }

            .thumbnail-image-container img {
            max-width: 100%;
            height: auto;
            }

            <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">

            <div class="container mt-4">
            <div class="row">

            <div class="col-lg-7 image-container">

            <div class="row">
            <div class="col-12 main-image-container img-fluid">
            <img src="https://placeholdit.co//i/1280x720?&text=Test">
            </div>
            </div>

            <div class="row pt-1">
            <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
            <img src="https://placeholdit.co//i/1280x720?&text=Test">
            </div>
            <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
            <img src="https://placeholdit.co//i/1280x720?&text=Test">
            </div>
            <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
            <img src="https://placeholdit.co//i/1280x720?&text=Test">
            </div>
            <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
            <img src="https://placeholdit.co//i/1280x720?&text=Test">
            </div>
            <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
            <img src="https://placeholdit.co//i/1280x720?&text=Test">
            </div>
            <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
            <img src="https://placeholdit.co//i/1280x720?&text=Test">
            </div>
            </div>

            </div>

            </div>
            </div>








            share|improve this answer



























              up vote
              0
              down vote



              accepted










              One solution would be adding the same padding to all col-* classes. Bootstrap have padding classes named p-*. Next example added the p-1 classes to main-image-container and thumbnail-image-container elements.






              .container {
              max-width: 98%;
              margin: 0 auto;
              }

              .image-container {
              background-color: #ffffff;
              padding: 10px;
              }

              .main-image-container img {
              max-width: 100%;
              height: auto;
              }

              .thumbnail-image-container img {
              max-width: 100%;
              height: auto;
              }

              <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">

              <div class="container mt-4">
              <div class="row">

              <div class="col-lg-7 image-container">

              <div class="row">
              <div class="col-12 p-1 main-image-container img-fluid">
              <img src="https://placeholdit.co//i/1280x720?&text=Test">
              </div>
              </div>

              <div class="row pt-2">
              <div class="col-2 p-1 thumbnail-image-container img-fluid">
              <img src="https://placeholdit.co//i/1280x720?&text=Test">
              </div>
              <div class="col-2 p-1 thumbnail-image-container img-fluid">
              <img src="https://placeholdit.co//i/1280x720?&text=Test">
              </div>
              <div class="col-2 p-1 thumbnail-image-container img-fluid">
              <img src="https://placeholdit.co//i/1280x720?&text=Test">
              </div>
              <div class="col-2 p-1 thumbnail-image-container img-fluid">
              <img src="https://placeholdit.co//i/1280x720?&text=Test">
              </div>
              <div class="col-2 p-1 thumbnail-image-container img-fluid">
              <img src="https://placeholdit.co//i/1280x720?&text=Test">
              </div>
              <div class="col-2 p-1 thumbnail-image-container img-fluid">
              <img src="https://placeholdit.co//i/1280x720?&text=Test">
              </div>
              </div>

              </div>

              </div>
              </div>





              A second solution will be splitting the thumbnails into two rows using the right col-* classes. Like on next example:






              .container {
              max-width: 98%;
              margin: 0 auto;
              }

              .image-container {
              background-color: #ffffff;
              padding: 10px;
              }

              .main-image-container img {
              max-width: 100%;
              height: auto;
              }

              .thumbnail-image-container img {
              max-width: 100%;
              height: auto;
              }

              <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">

              <div class="container mt-4">
              <div class="row">

              <div class="col-lg-7 image-container">

              <div class="row">
              <div class="col-12 main-image-container img-fluid">
              <img src="https://placeholdit.co//i/1280x720?&text=Test">
              </div>
              </div>

              <div class="row pt-1">
              <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
              <img src="https://placeholdit.co//i/1280x720?&text=Test">
              </div>
              <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
              <img src="https://placeholdit.co//i/1280x720?&text=Test">
              </div>
              <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
              <img src="https://placeholdit.co//i/1280x720?&text=Test">
              </div>
              <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
              <img src="https://placeholdit.co//i/1280x720?&text=Test">
              </div>
              <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
              <img src="https://placeholdit.co//i/1280x720?&text=Test">
              </div>
              <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
              <img src="https://placeholdit.co//i/1280x720?&text=Test">
              </div>
              </div>

              </div>

              </div>
              </div>








              share|improve this answer

























                up vote
                0
                down vote



                accepted







                up vote
                0
                down vote



                accepted






                One solution would be adding the same padding to all col-* classes. Bootstrap have padding classes named p-*. Next example added the p-1 classes to main-image-container and thumbnail-image-container elements.






                .container {
                max-width: 98%;
                margin: 0 auto;
                }

                .image-container {
                background-color: #ffffff;
                padding: 10px;
                }

                .main-image-container img {
                max-width: 100%;
                height: auto;
                }

                .thumbnail-image-container img {
                max-width: 100%;
                height: auto;
                }

                <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">

                <div class="container mt-4">
                <div class="row">

                <div class="col-lg-7 image-container">

                <div class="row">
                <div class="col-12 p-1 main-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                </div>

                <div class="row pt-2">
                <div class="col-2 p-1 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-2 p-1 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-2 p-1 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-2 p-1 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-2 p-1 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-2 p-1 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                </div>

                </div>

                </div>
                </div>





                A second solution will be splitting the thumbnails into two rows using the right col-* classes. Like on next example:






                .container {
                max-width: 98%;
                margin: 0 auto;
                }

                .image-container {
                background-color: #ffffff;
                padding: 10px;
                }

                .main-image-container img {
                max-width: 100%;
                height: auto;
                }

                .thumbnail-image-container img {
                max-width: 100%;
                height: auto;
                }

                <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">

                <div class="container mt-4">
                <div class="row">

                <div class="col-lg-7 image-container">

                <div class="row">
                <div class="col-12 main-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                </div>

                <div class="row pt-1">
                <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                </div>

                </div>

                </div>
                </div>








                share|improve this answer














                One solution would be adding the same padding to all col-* classes. Bootstrap have padding classes named p-*. Next example added the p-1 classes to main-image-container and thumbnail-image-container elements.






                .container {
                max-width: 98%;
                margin: 0 auto;
                }

                .image-container {
                background-color: #ffffff;
                padding: 10px;
                }

                .main-image-container img {
                max-width: 100%;
                height: auto;
                }

                .thumbnail-image-container img {
                max-width: 100%;
                height: auto;
                }

                <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">

                <div class="container mt-4">
                <div class="row">

                <div class="col-lg-7 image-container">

                <div class="row">
                <div class="col-12 p-1 main-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                </div>

                <div class="row pt-2">
                <div class="col-2 p-1 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-2 p-1 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-2 p-1 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-2 p-1 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-2 p-1 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-2 p-1 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                </div>

                </div>

                </div>
                </div>





                A second solution will be splitting the thumbnails into two rows using the right col-* classes. Like on next example:






                .container {
                max-width: 98%;
                margin: 0 auto;
                }

                .image-container {
                background-color: #ffffff;
                padding: 10px;
                }

                .main-image-container img {
                max-width: 100%;
                height: auto;
                }

                .thumbnail-image-container img {
                max-width: 100%;
                height: auto;
                }

                <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">

                <div class="container mt-4">
                <div class="row">

                <div class="col-lg-7 image-container">

                <div class="row">
                <div class="col-12 main-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                </div>

                <div class="row pt-1">
                <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                </div>

                </div>

                </div>
                </div>








                .container {
                max-width: 98%;
                margin: 0 auto;
                }

                .image-container {
                background-color: #ffffff;
                padding: 10px;
                }

                .main-image-container img {
                max-width: 100%;
                height: auto;
                }

                .thumbnail-image-container img {
                max-width: 100%;
                height: auto;
                }

                <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">

                <div class="container mt-4">
                <div class="row">

                <div class="col-lg-7 image-container">

                <div class="row">
                <div class="col-12 p-1 main-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                </div>

                <div class="row pt-2">
                <div class="col-2 p-1 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-2 p-1 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-2 p-1 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-2 p-1 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-2 p-1 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-2 p-1 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                </div>

                </div>

                </div>
                </div>





                .container {
                max-width: 98%;
                margin: 0 auto;
                }

                .image-container {
                background-color: #ffffff;
                padding: 10px;
                }

                .main-image-container img {
                max-width: 100%;
                height: auto;
                }

                .thumbnail-image-container img {
                max-width: 100%;
                height: auto;
                }

                <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">

                <div class="container mt-4">
                <div class="row">

                <div class="col-lg-7 image-container">

                <div class="row">
                <div class="col-12 p-1 main-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                </div>

                <div class="row pt-2">
                <div class="col-2 p-1 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-2 p-1 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-2 p-1 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-2 p-1 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-2 p-1 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-2 p-1 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                </div>

                </div>

                </div>
                </div>





                .container {
                max-width: 98%;
                margin: 0 auto;
                }

                .image-container {
                background-color: #ffffff;
                padding: 10px;
                }

                .main-image-container img {
                max-width: 100%;
                height: auto;
                }

                .thumbnail-image-container img {
                max-width: 100%;
                height: auto;
                }

                <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">

                <div class="container mt-4">
                <div class="row">

                <div class="col-lg-7 image-container">

                <div class="row">
                <div class="col-12 main-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                </div>

                <div class="row pt-1">
                <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                </div>

                </div>

                </div>
                </div>





                .container {
                max-width: 98%;
                margin: 0 auto;
                }

                .image-container {
                background-color: #ffffff;
                padding: 10px;
                }

                .main-image-container img {
                max-width: 100%;
                height: auto;
                }

                .thumbnail-image-container img {
                max-width: 100%;
                height: auto;
                }

                <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">

                <div class="container mt-4">
                <div class="row">

                <div class="col-lg-7 image-container">

                <div class="row">
                <div class="col-12 main-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                </div>

                <div class="row pt-1">
                <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                <div class="col-4 col-md-2 mt-2 thumbnail-image-container img-fluid">
                <img src="https://placeholdit.co//i/1280x720?&text=Test">
                </div>
                </div>

                </div>

                </div>
                </div>






                share|improve this answer














                share|improve this answer



                share|improve this answer








                edited Nov 9 at 22:50

























                answered Nov 9 at 22:33









                D. Smania

                2,6521321




                2,6521321






























                     

                    draft saved


                    draft discarded



















































                     


                    draft saved


                    draft discarded














                    StackExchange.ready(
                    function () {
                    StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53233822%2fimage-gallery-thumbnail-size-with-bootstrap-4%23new-answer', 'question_page');
                    }
                    );

                    Post as a guest















                    Required, but never shown





















































                    Required, but never shown














                    Required, but never shown












                    Required, but never shown







                    Required, but never shown

































                    Required, but never shown














                    Required, but never shown












                    Required, but never shown







                    Required, but never shown







                    Popular posts from this blog

                    Guess what letter conforming each word

                    Port of Spain

                    Run scheduled task as local user group (not BUILTIN)