chromium/third_party/blink/web_tests/external/wpt/css/css-flexbox/flexbox-dyn-resize-001.html

<!DOCTYPE html>
<!--
     Any copyright is dedicated to the Public Domain.
     http://creativecommons.org/publicdomain/zero/1.0/
-->
<html>
<head>
  <meta charset="utf-8">
  <title>
    CSS Test: Testing how a sizing change to one flex item impacts its sibling
  </title>
  <link rel="author" title="Daniel Holbert" href="mailto:[email protected]">
  <link rel="help" href="https://drafts.csswg.org/css-flexbox-1/#layout-algorithm">
  <link rel="match" href="flexbox-dyn-resize-001-ref.html">
  <style>
    .container {
      width: 100px;
      display: flex;
      border: 1px solid purple;
      margin-bottom: 15px;
    }
    .item {
       margin: 2px;
       background: lightblue;
    }
    .inline-box {
      display: inline-block;
      height: 10px;
      width: 10px;
      background: lightgray;
      border: 1px solid black;
     }
  </style>
  <script>
  function go() {
    // Make this item steal all the spare width (forcing its sibling to shrink)
    // by giving it a huge 'width' and therefore huge flex-basis:
    document.getElementById("change-width").style.width = "300px";

    // Make this item steal all the spare width (forcing its sibling to shrink)
    // by giving it a pretty big flex-basis and no shrinkability:
    document.getElementById("change-flex").style.flex = "0 0 75px"
  }
  </script>
</head>
<body onload="go()">
  <div class="container">
    <div class="item" id="change-width">
      <div class="inline-box"></div><div class="inline-box"></div>
    </div>
    <div class="item">
      <div class="inline-box"></div><div class="inline-box"></div>
    </div>
  </div>

  <div class="container">
    <div class="item" id="change-flex">
      <div class="inline-box"></div><div class="inline-box"></div>
    </div>
    <div class="item">
      <div class="inline-box"></div><div class="inline-box"></div>
    </div>
  </div>
</body>
</html>