#site_center {text-align:center;}
#main {margin:0 auto; width:766px; text-align:left;}

.col_1, .col_2, .col_3, .col_box_1, .col_box_2, .col_box_1a, .col_box_2a{float:left;}

#page1 .content .col_1{width:375px;}
#page1 .content .col_2{width:308px;}
#page2 .content .col_1{width:690px;}
#page3 .content .col_1{width:404px;}
#page3 .content .col_2{width:280px;}
#page4 .content .col_1{width:690px;}
#page5 .content .col_1{width:690px;}
#page6 .content .col_1{width:690px;}
#page7 .content .col_1{width:690px;}