.tail-top{ width:100%; background:url('http://enterconference.com/images/top.gif') repeat-x 50% top
}

.col-4{ float:left}

.col-3{ float:left}

.col-2{ float:left}

.col-1{ float:left}
/*======= width =======*/
.main{margin:0 auto; text-align:left; width:982px; }

/*======= header =======*/
#header {height:75px;  background:url('http://enterconference.com/images/top1d.gif') no-repeat center top
}

/*======= index.html =======*/
#content .col-1{ width:489px; border-right:1px solid #5b5b5b}
#content .col-2{ width:488px; border-left:1px solid #5b5b5b; margin-left:-1px}

#page6 .col-3{ width:211px}
#page6 .col-4{ width:219px}

#page7 .col-1{ width:980px}


/*======= footer =======*/
#footer { height:155px; }
#footer_b { height:95px; }