.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;margin-left: 10px;margin-right: 10px;}

.grid_2 {width:440px;}