irstElementChild; testcases.removeChild(testcase_template);
        testRelativeWeights.forEach(function(element) {

            var base = testcase_template.cloneNode(true);
            base.children[2].textContent = element.baseWeight;
            base.style.fontWeight = element.baseWeight;
            testcases.appendChild(base);

            test(() => {
                var actualLighter = window.getComputedStyle(base.children[0]).fontWeight;
                assert_equals(actualLighter, element.lighter,