<style>
  * {
    margin: 0;
  }
  body {
    background-color: white;
  }
</style>
<!-- To rebase:
  1. Open css-backgrounds.html in Ladybird
  2. Resize the window just above the width of the largest element
  3. Right click > "Take Full Screenshot"
  4. Update the image below:
-->
<img src="../images/css-backgrounds-ref.png">