.wrapper > div:nth-of-type(2n+1),
.wrapper > p:nth-of-type(2n){
background: orange;
}
/*或者*/
/*
.wrapper > div:nth-of-type(2n-1),
.wrapper > p:nth-of-type(2n){
background: orange;
}*/
/*或者*/
/*
.wrapper > div:nth-of-type(odd),
.wrapper > p:nth-of-type(even){
background: orange;
}*/
姚某某
2014-09-13
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