title: Flexbox max-height issue with IE11
body: <p>I'm trying to code a search menu separated in three parts. Each part will have a scrollbar if there's not enough vertical space for the results to display.</p>
  
  <p>In Chrome and Firefox, each menu displays its scrollbar, but on IE11, the menus overlap the wrapper.</p>
  
  <p>I've coded a sample which works on Chrome and Firefox (Firefox was tricky, I needed to add <code>overflow: hidden</code> on multiple levels of the menu).</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-css lang-css prettyprint-override"><code>.flex-wrapper {
    display: flex;
    margin: 20px auto;
    width: 1184px;
    max-height: 80vh;
    border: 2px solid red;
    min-height: 150px;
  }
  
  .flex-wrapper .flex-wrapper-inner {
    display: flex;
    width: 100%;
    flex-direction: column;
  }
  
  .flex-wrapper .flex-wrapper-inner .header {
    display: flex;
    flex-shrink: 0;
    width: 100%;
  }
  
  .flex-wrapper .flex-wrapper-inner .header H4 {
    flex: 1;
  }
  
  .flex-wrapper .flex-wrapper-inner .column-wrapper {
    flex-grow: 1;
    display: flex;
  }
  
  .flex-wrapper .flex-wrapper-inner .column {
    flex: 1;
    overflow-y: auto;
  }
  
  .flex-wrapper .flex-wrapper-inner .column H4 {
    text-align: center;
  }
  
  .box-results-users .list-group-item {
    margin: 0;
  }
  
  .box-results-users .list-group-item IMG {
    height: 60px;
    width: 60px;
  }
  
  .box-results {
    position: relative;
  }</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet" /&gt;
  &lt;div class="flex-wrapper"&gt;
    &lt;div class="flex-wrapper-inner"&gt;
      &lt;div class="header"&gt;
        &lt;h4&gt;Box 1&lt;/h4&gt;
        &lt;h4&gt;Box 2&lt;/h4&gt;
        &lt;h4&gt;Box 3&lt;/h4&gt;
  
      &lt;/div&gt;
      &lt;div class="column-wrapper"&gt;
        &lt;div class="column"&gt;
          &lt;div class="box-results list-group"&gt;
            &lt;a class="list-group-item" href="#"&gt;Quisque coeptis possedit radiis. Ardentior et contraria et quinta feras&lt;/a&gt;
            &lt;a class="list-group-item" href="#"&gt;Quisque coeptis possedit radiis. Ardentior et contraria et quinta feras&lt;/a&gt;
            &lt;a class="list-group-item" href="#"&gt;Quisque coeptis possedit radiis. Ardentior et contraria et quinta feras&lt;/a&gt;
            &lt;a class="list-group-item" href="#"&gt;Quisque coeptis possedit radiis. Ardentior et contraria et quinta feras&lt;/a&gt;
            &lt;a class="list-group-item" href="#"&gt;Quisque coeptis possedit radiis. Ardentior et contraria et quinta feras&lt;/a&gt;
            &lt;a class="list-group-item" href="#"&gt;Quisque coeptis possedit radiis. Ardentior et contraria et quinta feras&lt;/a&gt;
            &lt;a class="list-group-item" href="#"&gt;Quisque coeptis possedit radiis. Ardentior et contraria et quinta feras&lt;/a&gt;
            &lt;a class="list-group-item" href="#"&gt;Quisque coeptis possedit radiis. Ardentior et contraria et quinta feras&lt;/a&gt;
            &lt;a class="list-group-item" href="#"&gt;Quisque coeptis possedit radiis. Ardentior et contraria et quinta feras&lt;/a&gt;
            &lt;a class="list-group-item" href="#"&gt;Quisque coeptis possedit radiis. Ardentior et contraria et quinta feras&lt;/a&gt;
            &lt;a class="list-group-item" href="#"&gt;Quisque coeptis possedit radiis. Ardentior et contraria et quinta feras&lt;/a&gt;
            &lt;a class="list-group-item" href="#"&gt;Quisque coeptis possedit radiis. Ardentior et contraria et quinta feras&lt;/a&gt;
            &lt;a class="list-group-item" href="#"&gt;Quisque coeptis possedit radiis. Ardentior et contraria et quinta feras&lt;/a&gt;
            &lt;a class="list-group-item" href="#"&gt;Quisque coeptis possedit radiis. Ardentior et contraria et quinta feras&lt;/a&gt;
  
  
          &lt;/div&gt;
  
        &lt;/div&gt;
        &lt;div class="column"&gt;
          &lt;div class="box-results"&gt;
            &lt;a class="list-group-item" href="#"&gt;Quisque coeptis possedit radiis. Ardentior et contraria et quinta feras&lt;/a&gt;
            &lt;a class="list-group-item" href="#"&gt;Quisque coeptis possedit radiis. Ardentior et contraria et quinta feras&lt;/a&gt;
            &lt;a class="list-group-item" href="#"&gt;Quisque coeptis possedit radiis. Ardentior et contraria et quinta feras&lt;/a&gt;
            &lt;a class="list-group-item" href="#"&gt;Quisque coeptis possedit radiis. Ardentior et contraria et quinta feras&lt;/a&gt;
            &lt;a class="list-group-item" href="#"&gt;Quisque coeptis possedit radiis. Ardentior et contraria et quinta feras&lt;/a&gt;
  
          &lt;/div&gt;
        &lt;/div&gt;
        &lt;div class="column"&gt;
          &lt;div class="box-results box-results-users"&gt;
            &lt;div class="media list-group-item"&gt;
              &lt;div class="media-left"&gt;
                &lt;a href="#"&gt;
                  &lt;img class="media-object" src="https://randomuser.me/api/portraits/men/38.jpg" alt="..."&gt;
                &lt;/a&gt;
              &lt;/div&gt;
              &lt;div class="media-body"&gt;
                &lt;h4 class="media-heading"&gt;User Test&lt;/h4&gt;
                ...
              &lt;/div&gt;
            &lt;/div&gt;
            &lt;div class="media list-group-item"&gt;
              &lt;div class="media-left"&gt;
                &lt;a href="#"&gt;
                  &lt;img class="media-object" src="https://randomuser.me/api/portraits/men/38.jpg" alt="..."&gt;
                &lt;/a&gt;
              &lt;/div&gt;
              &lt;div class="media-body"&gt;
                &lt;h4 class="media-heading"&gt;User Test&lt;/h4&gt;
                ...
              &lt;/div&gt;
            &lt;/div&gt;
            &lt;div class="media list-group-item"&gt;
              &lt;div class="media-left"&gt;
                &lt;a href="#"&gt;
                  &lt;img class="media-object" src="https://randomuser.me/api/portraits/men/38.jpg" alt="..."&gt;
                &lt;/a&gt;
              &lt;/div&gt;
              &lt;div class="media-body"&gt;
                &lt;h4 class="media-heading"&gt;User Test&lt;/h4&gt;
                ...
              &lt;/div&gt;
            &lt;/div&gt;
            &lt;div class="media list-group-item"&gt;
              &lt;div class="media-left"&gt;
                &lt;a href="#"&gt;
                  &lt;img class="media-object" src="https://randomuser.me/api/portraits/men/38.jpg" alt="..."&gt;
                &lt;/a&gt;
              &lt;/div&gt;
              &lt;div class="media-body"&gt;
                &lt;h4 class="media-heading"&gt;User Test&lt;/h4&gt;
                ...
              &lt;/div&gt;
            &lt;/div&gt;
  
            &lt;div class="media list-group-item"&gt;
              &lt;div class="media-left"&gt;
                &lt;a href="#"&gt;
                  &lt;img class="media-object" src="https://randomuser.me/api/portraits/men/38.jpg" alt="..."&gt;
                &lt;/a&gt;
              &lt;/div&gt;
              &lt;div class="media-body"&gt;
                &lt;h4 class="media-heading"&gt;User Test&lt;/h4&gt;
                ...
              &lt;/div&gt;
            &lt;/div&gt;
            &lt;div class="media list-group-item"&gt;
              &lt;div class="media-left"&gt;
                &lt;a href="#"&gt;
                  &lt;img class="media-object" src="https://randomuser.me/api/portraits/men/38.jpg" alt="..."&gt;
                &lt;/a&gt;
              &lt;/div&gt;
              &lt;div class="media-body"&gt;
                &lt;h4 class="media-heading"&gt;User Test&lt;/h4&gt;
                ...
              &lt;/div&gt;
            &lt;/div&gt;
            &lt;div class="media list-group-item"&gt;
              &lt;div class="media-left"&gt;
                &lt;a href="#"&gt;
                  &lt;img class="media-object" src="https://randomuser.me/api/portraits/men/38.jpg" alt="..."&gt;
                &lt;/a&gt;
              &lt;/div&gt;
              &lt;div class="media-body"&gt;
                &lt;h4 class="media-heading"&gt;User Test&lt;/h4&gt;
                ...
              &lt;/div&gt;
            &lt;/div&gt;
            &lt;div class="media list-group-item"&gt;
              &lt;div class="media-left"&gt;
                &lt;a href="#"&gt;
                  &lt;img class="media-object" src="https://randomuser.me/api/portraits/men/38.jpg" alt="..."&gt;
                &lt;/a&gt;
              &lt;/div&gt;
              &lt;div class="media-body"&gt;
                &lt;h4 class="media-heading"&gt;User Test&lt;/h4&gt;
                ...
              &lt;/div&gt;
            &lt;/div&gt;
  
  
  
  
  
          &lt;/div&gt;
        &lt;/div&gt;
      &lt;/div&gt;
    &lt;/div&gt;</code></pre>
  </div>
  </div>
  </p>
  
  <p>Am I missing something on IE 11 ?</p>