est(
      function(){
        var target = document.getElementById("flex");
        assert_equals(getComputedStyle(target).columnGap, "normal");
      }, "colum-gap:normal (main axis) computes to normal on flexbox");
    test(
      function(){
        var target = document.getElementById("flex");
        assert_equals(getComputedStyle(target).rowGap, "normal");
      }, "row-gap:normal (cross axis) computes to normal on flexbox");
  </script>
</body>
