#main {width:800px}


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

#content .row_1, #content .row_2, #content .row_3 {width:505px}

/*======= index.html =======*/
#page1 #content .col_1 {width:252px}
#page1 #content .col_2 {width:253px}
/*=========================*/





/*======= index-3.html =======*/
#page4 #content .col_1 {width:252px}
#page4 #content .col_2 {width:253px}
/*=========================*/