Codebase Browser
chromium
Go to App

chromium/third_party/blink/web_tests/external/wpt/css/css-page/page-margin-006-print-ref.html 

<!DOCTYPE html>
<link rel="author" title="Morten Stenshorne" href="mailto:[email protected]">
<style>
  @page {
    size: 6in;
    margin: 0.5in;
  }
  html {
    background: yellow;
    margin: 0.5in;
  }
  body {
    margin: 0;
    background: cyan;
  }
</style>
There should be a half-inch page margin on every side. The cyan box should be
inset by yet another half-inch, except at the bottom.
<div style="break-before:page;">
  Second page.
</div>