4 div { background-color: red; width: 100px; height: 100px }
8 var s = document.createElement("style");
9 var t = document.createTextNode("div { background-color: green }");
11 document.documentElement.appendChild(s);
14 div { background-color: orange }
16 You should see a 100x100 green square below. If you see any red or orange then the test has failed.