#main {margin:0 auto; width:862px; text-align:left;}

#header, #content, #footer {width:100%; overflow:hidden}

.col_1, .col_2, .col_3, .col_box_1, .col_box_2{ float:left;}

.col_1{width:507px;}
.col_2{width:355px; padding-top:11px}