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三栏的网页布局，中间内容不确定高，问怎么让两边的背景始终与内容高度一致,布布扣,bubuko.com
三栏的网页布局，中间内容不确定高，问怎么让两边的背景始终与内容高度一致
原文地址：http://www.cnblogs.com/xiaoleidiv/p/3732359.html
