forced-colors-mode-backplate-10-ref.html

<!DOCTYPE html>
<html class="reftest-wait">
<meta charset="utf-8">
<title>
  Forced colors mode - backplate reference.
  Tests that backplates of overlapping inline boxes do not overlap.
</title>
<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
<script src="../../common/reftest-wait.js"></script>
<link rel="preload" as="image" href="../resources/test-image.jpg" onload="takeScreenshot()" />
<style>
  body {
    background-image: url("../resources/test-image.jpg");
    font-family: Ahem;
    font-size: 10px;
    forced-color-adjust: none; /* This turns the backplate feature off in forced colors mode.
                                  The backplate is simulated in testing using a background-color
                                  of Canvas behind the text.
                                */
    line-height: 10px;
    text-align: justify;
    width: 100px;
  }
  div {
    background-color: Canvas;
  }
</style>
<body>
  <div>
    <div>
      The two backplates should not overlap
    </div>
    <br>
    <div style="margin-top: -25px; z-index: -1;">
      in forced colors mode.
    </div>
  </div>
</body>
</html>

chromium/third_party/blink/web_tests/external/wpt/forced-colors-mode/backplate/forced-colors-mode-backplate-10-ref.html