#site_center {text-align:center;}
#main {margin:0 auto; width:768px; text-align:left; background:url(images/top_bg.gif) repeat-x top #a4b5c3;}


.col_1, .col_2, .col_3, .col_box_1, .col_box_2, .col_box_3 { float:left;}

#content .col_1 {width:557px; background: #a4b5c3;}
#content .col_2 {width:211px}