.main{width:780px; margin:0 auto; text-align:left;}

/*=========page_1===========*/
#page_1 .col_1{width:247px;}
#page_1 .col_2{width:247px;}
#page_1 .col_3{width:170px;}
#page_1 .mid{width:12px;}
/*========//page_1===========*/

/*=========page_2===========*/
#page_2 .col_1{width:247px;}
#page_2 .mid{width:12px;}
#page_2 .col_2{width:430px;}
/*========//page_2===========*/

/*=========page_4===========*/
#page_4 .col_1{width:247px;}
#page_4 .mid{width:12px;}
#page_4 .col_2{width:430px;}
/*========//page_4===========*/