[css layout][18]Liquid, secondary columns fixed-width

left, left,left

 1 #wrapper {
 2   margin-left: 400px;
 3   float: left;
 4 }
 5 #navigation {
 6   width: 200px;
 7   float: left;
 8   margin-left: -100%;
 9 }
10 #extra {
11   width: 200px;
12   float: left;
13   margin-left: -100%;
14   position: relative;
15   left: 200px;
16 }
17 #footer {
18   clear: both;
19 }

right, right, right

 1 #wrapper {
 2   margin-left: 400px;
 3   float: right;
 4 }
 5 #navigation {
 6   width: 200px;
 7   float: right;
 8   margin-right: -200px;
 9 }
10 #extra {
11   width: 200px;
12   float: right;
13   margin-right: -400px;
14 }
15 #footer {
16   clear: both;
17 }