.col_1, .col_2, .col_3, .column1, .column2, .column3 { float:left;}

/*======= content.html =======*/
#container #content .col_1 {width:276px;}
#container #content .col_2 { width:483px;}

#container #content .col_2 .column1 { width:250px;}
#container #content .col_2 .column2 { width:177px;}

/*=========================*/