chromium/third_party/blink/web_tests/external/wpt/css/css-backgrounds/background-clip-padding-box-001.html

<!doctype html>
<title>background-clip: padding-box with fractional border-width</title>
<link rel="help" href="https://www.w3.org/TR/css-backgrounds-3/#the-background-clip">
<link rel="match" href="../reference/ref-filled-green-100px-square-only.html">
<style>
#back {
  width: 100px;
  background-color: red;
}
#target {
  box-sizing: border-box;
  width: 100px;
  height: 100px;
  border-top: 49.75px solid green;
  border-bottom: 49.75px solid green;
  background-color: green;
  background-clip: padding-box;
}
</style>
<p>Test passes if there is a filled green square.</p>
<div id="back">
  <div id="target"></div>
</div>