@charset "utf-8";ul#menu_icon{display:block;width:90px;margin:0;margin-right:auto;margin-left:auto;padding:20px;list-style-type:none;}ul#menu_icon li{margin:0;padding:0;}ul#menu_icon li a{display:block;width:90px;height:90px;color:#000;text-decoration:none;background:url(osabtn90.png) no-repeat 0 0;}ul#menu_icon li a:hover{background:url(osabtn90.png) no-repeat 0 -90px;}#wrapper{text-align:center;}