@charset "UTF-8";
#wrap {width:640px; height:auto; margin:0 auto; position:relative; }
#wrap header { width:640px; height:0px; background:#fff; position:relative; z-index:200; }
#wrap section { height:auto; margin:0 auto; }
#wrap section.sub { width:640px;}
#wrap nav { height:68px;margin:0}
#wrap footer { height:auto; margin:0 auto; }