op and bottom sides." name="assert">

  <!--

  'round'
  The image is tiled (repeated) to fill the area. If it does not
  fill the area with a whole number of tiles, the image is rescaled
  so that it does.

  https://www.w3.org/TR/css-backgrounds-3/#valdef-border-image-repeat-round

  -->

  <style>
  div
    {
      border: red solid 64px;
      border-image-repeat: round; /* this is the same as 'round round' since
      "
      If the second keyword is absent, it is assumed to be the same as the first.
