三欄自適應佈局

·1.兩邊固定,中間自適應

轉載自 http://blog.csdn.net/cinderella_hou/article/details/52156333

 

tips:

　　聖盃佈局原理:轉載自 http://www.jianshu.com/p/f9bcddb0e8b4