wpt/css/css-sizing/intrinsic-percent-replaced-026.html at master · web-platform-tests/wpt · GitHub

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<!DOCTYPE html>
<meta charset="utf-8">
<link rel="author" title="Ting-Yu Lin" href="mailto:tlin@mozilla.com">
<link rel="author" title="Mozilla" href="https://www.mozilla.org/">
<link rel="help" href="https://drafts.csswg.org/css-sizing-3/#intrinsic-sizes">
<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1888262">
<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
<meta name="assert" content="This test verifies that the inner div's stretched main size (height) serves as a percentage basis for the img's height. The img can transfer its height through the aspect-ratio to the inline axis when computing its intrinsic inline size contribution. This determines the inner div's main-size (width).">

<style>
.outer {
  display: flex;
  height: 100px;
}
.inner {
  background: red;
}
img {
  height: 100%;
}
</style>

<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
<div class="outer">
  <div class="inner">
    <img src="aspect-ratio/support/200x200-green.png">
  </div>
</div>