css/css-flexbox/flexbox-with-pseudo-elements-002.html

<!DOCTYPE html>
<!--
     Any copyright is dedicated to the Public Domain.
     http://creativecommons.org/publicdomain/zero/1.0/
-->
<!-- Testcase to ensure we handle ::before and ::after pseudo-elements on
     a flex container and treat them as flex items (e.g. honoring "order").
-->
<html>
<head>
  <title>CSS Test: Testing that generated content nodes are treated as a flex items, and honor 'order'</title>
  <link rel="author" title="Daniel Holbert" href="mailto:dholbert@mozilla.com">
  <link rel="help" href="http://www.w3.org/TR/css-flexbox-1/#flex-items">
  <link rel="match" href="flexbox-with-pseudo-elements-002-ref.html">
  <meta charset="utf-8">
  <style>
    .flexContainer {
      display: flex;
      margin-bottom: 2px;
      background: lightgray;
    }
    .withBefore::before {
      content: 'b';
      background: yellow;
      /* This 'order' value should place us after the other elements, visually,
         even though we're ::before. */
      order: 1;
    }
    .withAfter::after {
      content: 'a';
      background: lightblue;
      /* This 'order' value should place us before the other elements, visually,
         even though we're ::after. */
      order: -1;
    }
  </style>
</head>
<body>
  <!-- 'b' should be at end, due to its high 'order' value: -->
  <div class="flexContainer withBefore">
    <div>I</div>
  </div>

  <!-- 'b' should be at beginning, since it's '::before' and the other item has
        a matching 'order' value: -->
  <div class="flexContainer withBefore">
    <div style="order: 1">I</div>
  </div>

  <!-- 'a' should be at beginning, due to its low 'order' value: -->
  <div class="flexContainer withAfter">
    <div>I</div>
  </div>

  <!-- 'b' should be at beginning, since it's '::after' and the other item has
        a matching 'order' value: -->
  <div class="flexContainer withAfter">
    <div style="order: -1">I</div>
  </div>

  <!-- As above, the ::after 'a' should be at beginning, and the ::before 'b'
       should be at end, due to their 'order' values -->
  <div class="flexContainer withBefore withAfter">
    <div>I</div>
  </div>

  <!-- ...but now the normal item "I" has its order increased, so it'll go
       at the end. -->
  <div class="flexContainer withBefore withAfter">
    <div style="order: 1">I</div>
  </div>

  <!-- ...and now the normal item "I" has its order reduced, so it'll go
       at the beginning. -->
  <div class="flexContainer withBefore withAfter">
    <div style="order: -1">I</div>
  </div>
</body>
</html>