A.外陰影B.內陰影C.水平偏移D.垂直偏移
A.normalB.break-wordC.clipD.ellipsis
A.li:nth-child(2n){color:red;}B.li:nth-child(n+1){color:red;}C.li:nth-child(even){color:red;}D.li:nth-child(odd){color:red;}