chromium/third_party/blink/web_tests/external/wpt/css/css-page/page-box-007-print.html

<!DOCTYPE html>
<link rel="author" title="Morten Stenshorne" href="mailto:[email protected]">
<link rel="help" href="https://drafts.csswg.org/css-page-3/#page-properties">
<link rel="match" href="page-box-007-print-ref.html">
<meta name="assert" content="Test percentage-based @page padding">
<style>
  @page {
    size: 400px 800px;
    margin: 0;
    padding: 5% 20% 15% 40%;
    background: red;
  }
  body {
    margin: 0;
    background: hotpink;
  }
</style>
<div style="box-sizing:border-box; padding:4px; height:100vh; background:yellow;">
  The page padding (in hotpink) should be smallest at the top, larger at the
  right, even larger at the bottom, and largest at the left. There should be no
  red.
</div>