A css grid system. The number represents a column span. The inherent width of each subsequent column (numbered) is equal to the column width plus the gutter width. Use gridulator.com to help with the calculations.

grid.css

/*
 Width: 1000px
 # Columns : 12 
 Column width: 65px
 Gutter : 20px 

 */
.grid_1 { width: 65px; }
.grid_2 { width: 150px; }
.grid_3 { width: 235px; }
.grid_4 { width: 320px; }
.grid_5 { width: 405px; }
.grid_6 { width: 490px; }
.grid_7 { width: 575px; }
.grid_8 { width: 660px; }
.grid_9 { width: 745px; }
.grid_10 { width: 830px; }
.grid_11 { width: 915px; }
.grid_12 { width: 1000px; }

.grid_1,
.grid_2,
.grid_3,
.grid_4,
.grid_5,
.grid_6,
.grid_7,
.grid_8,
.grid_9,
.grid_10,
.grid_11,
.grid_12 {
	margin: 0 20px 10px 0;
	float: left;
	display: block;
}

.alpha{margin-left:0px;}
.omega{margin-right:0px;}

.container{
	width: 1000px; 
	margin: auto;
}



.clear{
	clear:both;
	display:block;
	overflow:hidden;
	visibility:hidden;width:0;height:0
}

.clearfix:after {
	clear:both;
	content:' ';
	display:block;
	font-size:0;
	line-height:0;
	visibility:hidden;
	width:0;
	height:0
}

* html 
.clearfix,
*:first-child+html 
.clearfix{
	zoom:1
}