如何控制ul中的li在四个以内？
Published by Xianqiao Wang on May 7th, 2013
css
正数第5
#topmenu li:nth-child(5)
倒数第1
#topmenu li:nth-last-child(1)
http://tieba.baidu.com/p/2312949919
正数第5
#topmenu li:nth-child(5)
倒数第1
#topmenu li:nth-last-child(1)