.container_5{margin-left:auto;margin-right:auto;width:950px}
.grid_1,.grid_2,.grid_3,.grid_4,.grid_5{display:inline;float:left;position:relative;margin-left:15px;margin-right:15px}

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

.container_5 .grid_1{width:160px}
.container_5 .grid_2{width:350px}
.container_5 .grid_3{width:540px}
.container_5 .grid_4{width:730px}
.container_5 .grid_5{width:920px}

.container_5 .prefix_1{padding-left:190px}
.container_5 .prefix_2{padding-left:380px}
.container_5 .prefix_3{padding-left:570px}
.container_5 .prefix_4{padding-left:760px}

.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{height:1%}