<!DOCTYPE HTML>
<html>
<head>
  <meta charset="utf-8">
  <title>CSS Reftest Reference</title>
  <link rel="author" title="Daniel Holbert" href="mailto:dholbert@mozilla.com">
  <link rel="author" title="Morgan Rae Reschenberg" href="mailto:mreschenberg@berkeley.edu">
  <style>
  .basic {
    overflow: scroll;
    position: relative;
    border: 2px solid green;
  }
  .height-ref {
    height: 60px;
    background: lightblue;
  }
  .width-ref {
    width: 60px;
  }
  .floatLBasic-ref {
    float: left;
  }
  .floatLWidth-ref {
    float: left;
    width: 60px;
  }
  .flexBaselineCheck {
    display: flex;
    align-items: baseline;
  }
  .innerContents {
    color: transparent;
    height: 100px;
    width: 100px;
    position: absolute;
  }
  .zeroHeightContents {
    color: transparent;
    height: 0px;
    width: 0px;
  }
  </style>
</head>
<body>
  <!-- NOTE: In the reference-case scenarios here, we use the same DOM as in
       the testcase, and we simply use 'position: absolute' on the descendants
       wherever the testcase has 'contain: size' on the container.  This
       produces an accurate reference rendering, because out-of-flow content
       doesn't contribute to the container's sizing, but does create scrollable
       overflow (i.e. it produces scrollbars of the appropriate size for the
       amount of overflow). -->
  <div class="basic"><div class="innerContents">inner</div></div>
  <br>

  <div class="basic height-ref"><div class="innerContents">inner</div></div>
  <br>

  <div class="basic height-ref"><div class="innerContents">inner</div></div>
  <br>

  <div class="basic width-ref"><div class="innerContents">inner</div></div>
  <br>

  <div class="basic width-ref"><div class="innerContents">inner</div></div>
  <br>

  <div class="basic floatLBasic-ref"><div class="innerContents">inner</div></div>
  <br>

  <div class="basic floatLWidth-ref"><div class="innerContents">inner</div></div>
  <br>

  <div class="flexBaselineCheck">
    outside before
    <div class="basic">
      <!-- We use the out-of-flow "innerContents" to create the correct
           amount of scrollable overflow to match the testcase, and we
           use the smaller in-flow "zeroHeightContents" to provide a
           baseline that we can use to verify the testcase's baseline
           alignment position. -->
      <div class="innerContents">inner</div>
      <div class="zeroHeightContents">i</div>
    </div>
    outside after
  </div>
</body>
</html>