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二级菜单不能顶头_html/css_WEB-ITnose

                  #menu,#submenu{ font-family:微软雅黑; font-size:medium;}/*菜单字体*/       #menu{width:100%}    #menu ul,#submenu ul{ list-style:none;} /*去掉列表的点*/     #menu ul li,#submenu ul li{ float:left; padding:10px; width:120px; text-align:center}/*横向显示*/     #submenu{ text-align:left; display: block; position: inherit;}    #menu ul li:hover{ border-bottom-style:solid; border-bottom-color:rgba(0,0,255,.5); cursor:pointer; color:rgba(255,0,0,.5);}    #menu ul li:active{border-bottom-style:none; border-bottom-color:Red;cursor:pointer;color:Red;}    .subfirst{ float:left; display:none;}                        function showsub(rootid) {            hidesub();            $('#submenu' + rootid).show();        }        function hidesub() {            for (var i = 1; i        

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