css/css-page/margin-boxes/content-001-print.html

<!DOCTYPE html>
<link rel="author" title="Morten Stenshorne" href="mailto:mstensho@chromium.org">
<link rel="help" href="https://drafts.csswg.org/css-page-3/#populating-margin-boxes">
<meta name="assert" content="Basic content property test, with just text, and various ways of expressing nothingness.">
<link rel="match" href="content-001-print-ref.html">
<style>
  :root {
    print-color-adjust: exact;
  }
  @page {
    size: 400px;
    margin: 100px;

    @top-left-corner {
      /* No content property here. */
      width: 50px;
      height: 50px;
      background: red;
    }
    @top-left {
      width: 100px;
      text-align: left;
      vertical-align: top;
      content: "PASS";
      background: hotpink;
    }
    @top-right {
      text-align: left;
      vertical-align: top;
      content: "PA" "SS";
      background: yellow;
    }
    @bottom-left {
      /* An empty string is also content. */
      content: "";
      background: yellow;
    }
    @bottom-left-corner {
      width: 50px;
      height: 50px;
      content: none; /* This is nothing. */
      background: red;
    }
    @bottom-right-corner {
      width: 50px;
      height: 50px;
      content: normal; /* This also nothing. */
      background: red;
    }
  }
</style>