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

/*======= header =======*/
#header{ height:128px; width:100%}

/*======= footer =======*/
#footer{ height:58px; width:100%}

/*======= content =======*/
#content { width:100%}

.col_1, .col_2, .col_3, .col1, .col2, .col3, .col { float:left;}


/*======= index-1.html =======*/
#page2 .col_1{ width:255px}
#page2 .col_2{ width:315px}

/*======= index-3.html =======*/
#page4 .col_1{ width:255px}
#page4 .col_2{ width:315px}

/*======= index-7.html =======*/
#page8 .col_1{ width:255px}
#page8 .col_2{ width:315px}