1.left left left
1 #wrapper { 2 width: 66%; 3 float: left; 4 } 5 #content { 6 margin-right: 200px; 7 } 8 #navigation { 9 width: 200px; 10 float: left; 11 margin-left: -200px; 12 } 13 #extra { 14 float: left; 15 width: 34%; 16 } 17 #footer { 18 clear: both; 19 }
[css layout][21]Liquid, three columns, hybrid widths
原文：http://www.cnblogs.com/qiudeqing/p/3536426.html