@charset "UTF-8";
 *{
     margin: 0;
     padding: 0;
 }

body{
    font-size: 14px;
    font-family: sans-serif;
}
#navigation,#navigation li ul{
    list-style-type: none;
}
#navigation li{
    float: left;
    text-align: center;
    position: relative;
}
#navigation li a:link,#navigation li a:visited{
    display: block;
    text-decoration: none;
    color: #000;
    width: 120px;
    height: 40px;
    line-height: 40px;
    border: 1px solid #fff;
    background: #c5dbf2;
    border-width: 1px 1px 0 0; 
}
#navigation li a:hover{
    color: #fff;
    background: #2687eb;
}
#navigation li ul li{
    float: none;    
}
#navigation li ul{
    display: none;
    position: absolute;       /*二级ul使用绝对定位，宽度大于一级菜单时，才不会撑大一级*/

}
#navigation li ul li a:link,#navigation li ul li a:visited{
    display: block;
    width: 160px;
}