.main{width:780px; text-align:left;}

/*=========page_1===========*/
#page_1 .col_1{width:53%;}
#page_1 .mid{width:8%;}
#page_1 .col_2{width:34%;}
/*========//page_1===========*/

/*=========page_2===========*/
#page_2 .col_1{width:36%;}
#page_2 .mid{width:8%;}
#page_2 .col_2{width:54%;}
/*========//page_3===========*/
#page_3 .col_1{width:100%;}
#page_3 .mid{display:none;}
#page_3 .col_2{display:none;}