.container { margin-left:auto; margin-right:auto; padding:0 10px; width:840px }

.grid_1,
.grid_2,
.grid_3,
.grid_4,
.grid_5,
.grid_6,
.grid_7,
.grid_8,
.grid_9,
.grid_10,
.grid_11,
.grid_12 { display:inline; float:left; position:relative; margin-left:10px; margin-right:10px }

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

.grid_1  { width:50px  }
.grid_2  { width:120px }
.grid_3  { width:190px }
.grid_4  { width:260px }
.grid_5  { width:330px }
.grid_6  { width:400px }
.grid_7  { width:470px }
.grid_8  { width:540px }
.grid_9  { width:610px }
.grid_10 { width:680px }
.grid_11 { width:750px }
.grid_12 { width:820px }

.clear { clear:both; height:1px; }