chromium/third_party/blink/web_tests/external/wpt/css/css-masking/clip-path/clip-path-borderBox-1e.html

<!DOCTYPE html>
<title>CSS Masking: clip path with border-box and border-radius</title>
<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#the-clip-path">
<link rel="help" href="https://drafts.csswg.org/css-shapes-1/#valdef-shape-box-border-box">
<link rel="match" href="reference/green-circle-100x100.html">
<meta name="fuzzy" content="maxDifference=0-126; totalPixels=0-400">
<meta name="assert" content="Check that the 'clip-path' property supports border-box with border-radius.">

<style>
  .clipped {
    width: 50px;
    height: 50px;
    background-color: green;
    clip-path: border-box;
    border: 25px solid green;
    border-radius: 50px;
    /* This outline draws outside the border box and should be clipped. */
    outline: 8px solid red;
  }
</style>
<div class="clipped"></div>