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HTML

              
                <div class="FlexContainerWrapper">
  <div class="FlexContainer">
    <div class="FlexItem">
      <p>When content is sparse,<br>
        I should be centered.</p>
    </div>
  </div>
</div>

<div class="FlexContainerWrapper">
  <div class="FlexContainer">
    <div class="FlexItem">
      <p>When there's lots of content&mdash;more content than can fit inside the flex container&mdash;the container should expand vertically to accomodate.</p>
      <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer non pulvinar mi, quis aliquam ligula. Aenean cursus sapien augue, vel porta arcu aliquet ut. Cras eu massa eu libero porttitor commodo. Morbi non ante luctus, finibus felis sit amet, dignissim augue. Sed consectetur iaculis nisi sed vestibulum. Integer accumsan auctor justo sed eleifend. Suspendisse id diam lectus. Nullam et volutpat dui. Pellentesque a mauris ac ante viverra elementum. Curabitur tincidunt ac ex ut lobortis. In eget ligula ut sapien convallis feugiat. Duis vehicula eget elit at consectetur. Aliquam pharetra maximus consequat. Fusce mattis vel velit non cursus. Integer sed metus libero. Fusce leo est, suscipit id velit eu, egestas viverra nibh. Duis sed orci augue. Vivamus varius consectetur gravida. Sed id faucibus felis. Morbi a diam nisi. Lorem ipsum dolor sit amet, consectetur adipiscing elit.</p>
    </div>
  </div>
</div>
              
            
!

CSS

              
                /**
 * Flexbug demo 3.2.b (workaround)
 *
 * 1. Flexbug #2 workaround.
 */

.FlexContainerWrapper {
  display: flex;
  flex-direction: column;
}

.FlexContainer {
  align-items: center;
  background: hsla(0,0%,0%,.1);
  display: flex;
  flex-direction: column;
  justify-content: center;
  margin: 1em;
  padding: 2em;
  min-height: 250px;
  width: 400px;
}

.FlexItem {
  background: hsla(0,0%,0%,.1);
  box-sizing: border-box; /* 1 */
  max-width: 100%; /* 1 */
  padding: 0 1em;
}

              
            
!

JS

              
                
              
            
!
999px

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