CSS本身提供了选择第几个元素的功能,今天找了下整理出来:

:nth-child(2)选取第几个标签,“2可以是你想要的数字”
:nth-child(n+4)选取大于等于4标签,“n”表示从整数,下同
:nth-child(-n+4)选取小于等于4标签
:nth-child(2n)选取偶数标签,2n也可以是even
:nth-child(2n-1)选取奇数标签,2n-1可以是odd
:nth-child(3n+1)自定义选取标签,3n+1表示“隔二取一”
:last-child选取最后一个标签
:nth-last-child(3)选取倒数第几个标签,3表示选取第3个

.demo01 li:nth-child(2){background:#090}

整理自:http://www.daqianduan.com/3737.html

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