background-clip-content-box-001.html

<!DOCTYPE html>
<title>CSS Backgrounds and Borders Test: background-clip Reference</title>
<link rel="author" title="James Wang" href="mailto:[email protected]">
<link rel="help" href="https://www.w3.org/TR/css-backgrounds-3/#the-background-clip">
<link rel="match" href="reference/background-clip-content-box-ref.html">
<style>
#test-color-blue {
  background-color: blue;
  height: 200px;
  position: absolute;
  width: 200px;
}
#test-color-orange {
  background-clip: content-box;
  background-color: rgba(255, 165, 0, 1);
  height: 180px;
  padding: 10px;
  position: absolute;
  width: 180px;
}
</style>
<p>Test passes if the orange box has a 10px width blue edge.</p>
<!-- background -->
<div id="test-color-blue"></div>
<div id="test-color-orange"></div>

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