简单的二级菜单导航实现css代码

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这种效果在b2c商城经常用的到，刚结束的项目就用到了，简单分享下。
Demo：http://www.ostools.net/jsbin/uiafeaei/1

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>无标题文档</title> <style type="text/css"> ul{margin:0;padding:0;list-style-type:none;} a{ text-decoration:none;} .mold_open_hover,.mold_open{background-image:url(../image/open.png);background-repeat:none;display:inline-block;width:10px;height:6px;margin-left:10px;position:relative;top:-2px;} .mold_open{background-position:0 -6px;} .mold_open_hover{background-position:0 0;} .mod-menu{position:relative;z-index:1000;left:-1px;margin-left:100px;} h1{margin-left:100px;} .menu-cont-list a:hover{text-decoration:underline;} .mod-menu .menu-item{width:220px;border-top:solid 1px #d59bb2;border-bottom:solid 2px #d59bb2;position:relative;z-index:22;} .mod-menu .menu-item li{height:47px;line-height:47px;background:#feebf3;border-top:solid 1px #f0bfd3;} .mod-menu .menu-item li.mouse-bg{background:url(../image/mouse-menu-bg.jpg) no-repeat #fff;position:relative;z-index:22;margin-right:-4px;} .mod-menu .menu-item a{color:#c81d61;font-size:16px;padding-left:33px;display:block;height:45px;border-top:solid 1px #f1f2f7;} .mod-menu .menu-item a:hover{ text-decoration:none;} .mod-menu .menu-cont{position:absolute;left:220px;top:1px;background:#fff;width:573px;border:solid 1px #F0BFD3;box-shadow:2px 0 10px rgba(210,33,103,0.25);z-index:20;} .mod-menu .menu-cont-list{padding:0 30px;} .mod-menu .menu-cont-list li{border-bottom:dotted 1px #f0bfd3;padding:10px 0;} .mod-menu .menu-cont-list li:last-child{border-bottom:none;} .mod-menu .menu-cont-list h3{font-size:14px;font-weight:700;} .mod-menu .menu-cont-list h3 a{color:#222;} .mod-menu .menu-list-link a{color:#666;line-height:24px;} .mod-menu .menu-list-link .long-string{color:#ccc;font-size:12px;padding:0 10px;} </style> <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js" type="text/javascript"></script> <script type="text/javascript"> $(document).ready(function(){ var mod_menu=$(".mod-menu");//导航模块区 var menu=function(){ var menuItem=$(".menu-item li");//选择导航列表 menuItem.each(function(){ var _index=$(this).index();//获取当前选择菜单列表的索引 $(this).mouseenter(function(){ var y = $(this).position().top+1;//获取当前鼠标滑过的列表的顶部坐标 $(".menu-cont").show(); $(".menu-cont").css("top",y);//需要显示的对应索引内容 $(this).addClass("mouse-bg").siblings().removeClass("mouse-bg"); $(".menu-cont>div").eq(_index).show().siblings().hide(); }); });/*导航菜单菜单*/ $(".mod-menu").mouseleave(function(){ $(".menu-cont").hide(); menuItem.removeClass("mouse-bg"); }) }//展开二级菜单 menu();//执行展开二级菜单函 }); </script> </head> <body> <h1>简单的2级菜单导航</h1> <div class="mod-menu f-l"> <div id="column-left"> <ul class="menu-item"> <li class=""><a href="trade-wedding.html">Wedding</a></li> <li class=""><a href="trade-occasion-dresses.html">Occasion Dresses</a></li> <li class=""><a href="trade-women-s-clothing.html">Women's Clothing</a></li> <li class=""><a href="trade-women-s-shoes.html">Women's Shoes</a></li> <li class=""><a href="trade-accessories.html">Accessories</a></li> <li class=""><a href="trade-beauty-health.html">Beauty &amp; Health</a></li> </ul> <div class="menu-cont hide" style="display: none; top: 241px;"> <div class="menu-cont-list" style="display: none;"> <ul> <li> <h3><a href="wedding-dresses-c1_2.html">Wedding Dresses</a></h3> <div class="menu-list-link"></div> </li> <li> <h3><a href="bridesmaid-dresses-c1_3.html">Bridesmaid Dresses</a></h3> <div class="menu-list-link"></div> </li> <li> <h3><a href="wedding-party-dresses-c1_4.html">Wedding Party Dresses</a></h3> <div class="menu-list-link"> <a title="" href="mother-of-the-brides-dresses-c1_4_36.html">Mother of the Brides Dresses</a> <span class="long-string">|</span> <a title="" href="flower-girl-dresses-c1_4_37.html">Flower Girl Dresses</a> <span class="long-string">|</span> <a title="" href="wedding-guest-dresses-c1_4_38.html">Wedding Guest Dresses</a> </div> </li> <li> <h3><a href="wedding-accessories-c1_6.html">Wedding Accessories</a></h3> <div class="menu-list-link"> <a title="" href="fabric-swatch-c1_6_100.html">Fabric Swatch</a> <span class="long-string">|</span> <a title="" href="bridal-lingerie-c1_6_101.html">Bridal Lingerie</a> <span class="long-string">|</span> <a title="" href="wedding-veils-c1_6_48.html">Wedding Veils</a> <span class="long-string">|</span> <a title="" href="wedding-gloves-c1_6_51.html">Wedding Gloves</a> <span class="long-string">|</span> <a title="" href="wedding-shawls-c1_6_47.html">Wedding Shawls</a> <span class="long-string">|</span> <a title="" href="wedding-flowers-c1_6_52.html">Wedding Flowers</a> <span class="long-string">|</span> <a title="" href="wedding-petticoats-c1_6_120.html">Wedding Petticoats</a> </div> </li> </ul> </div> <div class="menu-cont-list" style="display: none;"> <ul> <li> <h3><a href="prom-dresses-c103_39.html">Prom Dresses</a></h3> <div class="menu-list-link"> </div> </li> <li> <h3><a href="military-ball-dresses-c103_118.html">Military Ball Dresses</a></h3> <div class="menu-list-link"> </div> </li> <li> <h3><a href="evening-dresses-c103_40.html">Evening Dresses</a></h3> <div class="menu-list-link"> </div> </li> <li> <h3><a href="cocktail-dresses-c103_41.html">Cocktail Dresses</a></h3> <div class="menu-list-link"> </div> </li> <li> <h3><a href="ball-gowns-c103_43.html">Ball Gowns</a></h3> <div class="menu-list-link"> </div> </li> <li> <h3><a href="homecoming-dresses-c103_44.html">Homecoming Dresses</a></h3> <div class="menu-list-link"> </div> </li> <li> <h3><a href="little-black-dresses-c103_45.html">Little Black Dresses </a></h3> <div class="menu-list-link"> </div> </li> <li> <h3><a href="quinceanera-dresses-c103_46.html">Quinceanera Dresses</a></h3> <div class="menu-list-link"> </div> </li> </ul> </div> <div class="menu-cont-list" style="display: none;"> <ul> <li> <h3><a href="dresses-c7_8.html">Dresses</a></h3> <div class="menu-list-link"> </div> </li> <li> <h3><a href="clubwear-c7_9.html">Clubwear</a></h3> <div class="menu-list-link"> </div> </li> <li> <h3><a href="leggings-c7_12.html">Leggings</a></h3> <div class="menu-list-link"> </div> </li> <li> <h3><a href="lingeries-c7_13.html">Lingeries</a></h3> <div class="menu-list-link"> <a title="" href="bras-c7_13_54.html">Bras</a> <span class="long-string">|</span> <a title="" href="babydolls-c7_13_56.html">Babydolls</a> <span class="long-string">|</span> <a title="" href="teddies-c7_13_57.html">Teddies</a> <span class="long-string">|</span> <a title="" href="panties-c7_13_58.html">Panties</a> <span class="long-string">|</span> <a title="" href="hosiery-c7_13_59.html">Hosiery</a> </div> </li> <li> <h3><a href="bustiers-corsets-c7_102.html">Bustiers &amp; Corsets</a></h3> <div class="menu-list-link"> </div> </li> <li> <h3><a href="costumes-c7_53.html">Costumes</a></h3> <div class="menu-list-link"> <a title="" href="sexy-costumes-c7_53_110.html">Sexy Costumes</a> <span class="long-string">|</span> <a title="" href="christmas-costumes-c7_53_119.html">Christmas Costumes</a> <span class="long-string">|</span> <a title="" href="halloween-costumes-c7_53_111.html">Halloween Costumes</a> <span class="long-string">|</span> <a title="" href="halloween-accessories-c7_53_112.html">Halloween Accessories</a> <span class="long-string">|</span> <a title="" href="zentai-c7_53_121.html">Zentai</a> </div> </li> <li> <h3><a href="swimwear-c7_11.html">Swimwear</a></h3> <div class="menu-list-link"> </div> </li> <li> <h3><a href="activewear-c7_10.html">Activewear</a></h3> <div class="menu-list-link"> </div> </li> </ul> </div> <div class="menu-cont-list" style="display: none;"> <ul> <li> <h3><a href="heels-c116_60.html">Heels</a></h3> <div class="menu-list-link"> </div> </li> <li> <h3><a href="pumps-c116_117.html">Pumps</a></h3> <div class="menu-list-link"> </div> </li> <li> <h3><a href="dance-shoes-c116_62.html">Dance Shoes</a></h3> <div class="menu-list-link"> </div> </li> <li> <h3><a href="boots-c116_63.html">Boots</a></h3> <div class="menu-list-link"> </div> </li> </ul> </div> <div class="menu-cont-list" style="display: none;"> <ul> <li> <h3><a href="evening-bags-c15_113.html">Evening Bags</a></h3> <div class="menu-list-link"> </div> </li> <li> <h3><a href="hats-scarves-c15_16.html">Hats &amp; Scarves</a></h3> <div class="menu-list-link"> <a title="" href="womens-hats-c15_16_64.html">Womens Hats</a> <span class="long-string">|</span> <a title="" href="womens-scarves-c15_16_65.html">Womens Scarves</a> </div> </li> <li> <h3><a href="jewelry-c15_17.html">Jewelry</a></h3> <div class="menu-list-link"> <a title="" href="earrings-c15_17_66.html">Earrings</a> <span class="long-string">|</span> <a title="" href="necklaces-c15_17_67.html">Necklaces</a> <span class="long-string">|</span> <a title="" href="rings-c15_17_68.html">Rings</a> </div> </li> <li> <h3><a href="watches-c15_18.html">Watches</a></h3> <div class="menu-list-link"> </div> </li> </ul> </div> <div class="menu-cont-list" style="display: block;"> <ul> <li> <h3><a href="wigs-hair-extensions-c19_23.html">Wigs &amp; Hair extensions</a></h3> <div class="menu-list-link"> </div> </li> <li> <h3><a href="fascinators-c19_69.html">Fascinators</a></h3> <div class="menu-list-link"> </div> </li> <li> <h3><a href="makeup-tools-c19_21.html">Makeup Tools</a></h3> <div class="menu-list-link"> </div> </li> <li> <h3><a href="spas-massagers-c19_71.html">Spas &amp; Massagers</a></h3> <div class="menu-list-link"> </div> </li> <li> <h3><a href="health-fitness-c19_70.html">Health &amp; Fitness</a></h3> <div class="menu-list-link"> </div> </li> </ul> </div> </div> </div> </div> </body> </html>

提示：您可以先修改部分代码再运行

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