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<!DOCTYPE html>
<title>Initial custom property values in :root::selection rule</title>
<script src="../support/selections.js"></script>
<style>
  :root::selection {
    background-color: green;
  }
</style>
<main>PASS if background-color is green when selected</main>
<script>
  selectNodeContents(document.querySelector("main"));
</script>