_equals(getComputedStyle(d1).fontSize, "20px");
        assert_equals(getComputedStyle(d1).width, "10px");
      }, "Test nested :is() chooses highest specificity for class outside :is().");

      test(() => {
        assert_equals(getComputedStyle(e1).color, red);
      }, "Test nested :is() specificity for class within arguments.");

    </script>
  </body>
</html>
