4 div { background-color:green; height:
1em }
5 div:nth-child(-
2n+
1) { background-color:red }
6 div:first-child { background-color:green }
10 There should be only green below. If you see RED the test has failed.
16 <div></div><div></div>
18 <div></div><div></div>
20 <div></div><div></div>
22 <div></div><div></div>
24 <div></div><div></div>