background-color-body-propagation-001.html

<!DOCTYPE html>
<title>CSS Backgrounds and Borders Test: propagate body background to viewport</title>
<link rel="author" title="Rune Lillesveen" href="mailto:[email protected]">
<link rel="help" href="https://drafts.csswg.org/css-backgrounds/#body-background">
<link rel="match" href="background-color-body-propagation-ref.html">
<style>
  html {
    background-color: transparent;
    background-image: none;
  }
  body {
    background-color: green;
    margin: 0;
  }
</style>
<p>The viewport should have a green background.</p>

chromium/third_party/blink/web_tests/external/wpt/css/css-backgrounds/background-color-body-propagation-001.html