chromium/third_party/blink/web_tests/external/wpt/css/css-flexbox/flex-child-percent-basis-resize-1.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>Testcase, bug 1584018</title>
<link rel="author" title="L. David Baron" href="https://dbaron.org/">
<link rel="author" title="Mozilla" href="https://mozilla.org">
<link rel="help" href="https://drafts.csswg.org/css-flexbox">
<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1584018">
<link rel="match" href="flex-child-percent-basis-resize-1-ref.html">

<style>
  .flex-container {
    display: flex;
    flex-direction: row;
    width: 100px;
  }

  .flex-item {
    flex: 1 0 auto;
  }

  .scroll-outer {
    overflow:hidden;
    /* this combination is important */
    height: 100%;
    max-height: 100px;
  }

  .scroll-inner {
    overflow:scroll;
    height:100%;
  }

</style>

<div class="flex-container">
  <div class="flex-item">
    <div class="scroll-outer">
      <div class="scroll-inner">
        <div>0</div>
        <div>1</div>
        <div>2</div>
        <div>3</div>
        <div>4</div>
        <div>5</div>
        <div>6</div>
        <div>7</div>
        <div>8</div>
        <div>9</div>
        <div>0</div>
        <div>1</div>
        <div>2</div>
        <div>3</div>
        <div>4</div>
        <div>5</div>
        <div>6</div>
        <div>7</div>
        <div>8</div>
        <div>9</div>
      </div>
    </div>
  </div>
</div>