.dropdown {float:left; display:inline; width:227px; font-weight:bold;}
.one-ddheader_t{height:31px;}
.dropdown dd{position:absolute; overflow:hidden; width:226px; display:none; background:#fff; z-index:200; opacity:0; padding:0 1px; box-shadow: 1px 1px 5px #333;}
.dropdown ul { border-bottom:1px solid #fff; border-top:1px solid #fff; list-style:none;}
.dropdown li {display:inline; }
.header_navi a, .header_navi a:active, .header_navi a:visited {display:block; padding: 5px 10px; color:#4a613B; text-decoration:none; background:#efefef;}
.header_navi a:hover {background:#4a613B; color:#fff;}
.header_navi .underline {border-bottom:1px solid #fff;}