<!DOCTYPE html>
<!--
    Any copyright is dedicated to the Public Domain.
    http://creativecommons.org/publicdomain/zero/1.0
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<html>
<head>
  <title>Reference: Testing safe overflow-position for align-self in absolutely positioned boxes in flex containers</title>
  <link rel="author" title="Mihir Iyer" href="mailto:miyer@mozilla.com">
  <meta charset="utf-8">
  <style>
    .flex {
      display: flex;
      height: 50px;
      width: 50px;
      border: 3px solid black;
      vertical-align: top;
      margin: 20px;
      position: relative;
    }
    .child {
      border: 2px dotted purple;
      background: teal;
      width: 65px;
      height: 65px;
      align-self: start;
      position: absolute;
      background: yellow;
    }
    .rowDir {
      flex-direction: row;
    }
    .colDir {
      flex-direction: column;
    }
    .vertRL {
      writing-mode: vertical-rl;
    }
  </style>
</head>
<body>
  <div class="flex rowDir"><div class="child"></div></div>
  <div class="flex colDir"><div class="child"></div></div>
  <div class="flex rowDir vertRL"><div class="child"></div></div>
  <div class="flex colDir vertRL"><div class="child"></div></div>
</body>
</html>
