二级导航为嘛显示不了？_html/css_WEB-ITnose

原创: 2016-06-24 12:17:22 913浏览

无法二级导航无法覆盖到之上

   WOW Hotel  --  Home 
  
                       
			 
  
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                   BBS				      								1
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    	Navigation
 	   	    			  Spend a weekend
					  Anywhere sale
					  Breakfast package
					  Romance package

/*-----------------------------------// 全局样式 //-----------------------------------*/body{ margin:0px; padding:0px; background-image:url(../images/top_bg.jpg); background-repeat: repeat-x;  font:12px/180% Arial,"宋体",Helvetica, sans-serif,Verdana;}/*--- top ---*/#top{ width:100%; height:471px; margin:0px auto;  }/*-----------------------------------// 头部样式 //-----------------------------------*/#header{ width:940px; height:100px; margin:0px auto; overflow: hidden; }#logo{ float:left;}#logon_text{}/*-----------------------------------// 导航样式 //-----------------------------------*/#nav{ margin:0px auto; }#nav_bg{ margin:0px auto; width:940px; height:42px; background:url(../images/nav_right.gif) no-repeat;}.nav_top ul{ margin:0px; padding:0px; list-style-type:none; }.nav_top ul li{ float:left;line-height: 42px; width:120px; text-decoration:none; text-align:center;}.nav_top li a,.nav_top li a:visited{display: block; text-decoration: none;color:#fff; font-weight: bold; font-size:13px;}.nav_top ul li a:hover{background:url(../images/menu_hover.gif) no-repeat;}.menu {background:url(../images/menu_hover.gif) no-repeat; position:absolute;}.menu li{list-style:none; }#banner{ clear:both;margin:0px auto; margin-top:4px; width:940px;}/*--- 主体页面 ---*/#main{ width:980px; height:481px; margin:0px auto; margin-top:3px;  border:1px solid #070707;}/*-----------------------------------// 首页 //-----------------------------------*//*----// 左侧 //----*/#i_left{ float:left; width:210px;}/*----// 居中 //----*/#center{ float:left; width:498px;}/*----// 右侧 //----*/#i_right{float:left; width:210px;}/*footer*/#footer{ width:940px; height:49px; margin:0px auto; border:1px solid #070707;}