<!DOCTYPE html>
<meta charset="utf-8">
<title>
  Forced colors mode - active selection.
</title>
<link rel="help" href="https://www.w3.org/TR/css-color-adjust-1/#forced-colors-properties">
<link rel=match href="forced-colors-mode-14-ref.html">
<style>
  br::selection {
    background-color: transparent;
    forced-color-adjust: none;
  }
  span {
    /* inline-block to ensure the selection bounding rectangle matches that of the
       span. This allows us to test selection using a reference test. */
    display: inline-block;
  }
  .select::selection {
    background-color: rgba(255, 0, 0, 0.99); /* alpha < 1 so that we don't blend the background color with white. */
    color: blue;
  }
  #adjust-none::selection {
    forced-color-adjust: none;
  }
</style>
<body>
  <span class="select">AAA</span>
  <br>
  <span class="select" id="adjust-none">AAA</span>
</body>

<script>
  var node1 = document.getElementsByClassName('select')[0].firstChild;
  var node2 = document.getElementsByClassName('select')[1].firstChild;
  var range = document.createRange();
  range.setStart(node1, 0);
  range.setEnd(node2, node2.length);
  window.getSelection().addRange(range);
</script>