utedStyle(target).columnGap, "normal");
      }, "Initial inherited gap is 'normal'");
    test(
      function(){
        var target = document.getElementById("gapInheritPx");
        assert_equals(getComputedStyle(target).rowGap, "12px");
        assert_equals(getComputedStyle(target).columnGap, "12px");
      }, "gap is inheritable");

    test(
      function(){
        var target = document.getElementById("invalidGapNegative");
        assert_equals(getComputedStyle(target).rowGap, "normal");
        a