#menu{
width: 298px;
border: 1px solid #169fe6
}
#menu ul{
margin:0px;
padding: 0px;
list-style:none; 
}
#menu ul li{
background:#169fe6;
height:40px;
line-height:40px;
text-align:center;
border-bottom:1px solid #169fe6;
position: relative;
}
#menu ul li a{
display:block;
font-size:18px;
color: #fff;
padding-left: 10px;
text-align: left;
text-decoration:none;
}
#menu ul li a:hover{
color: cornflowerblue;
background-color: #fff;
font-size:18px;
border: 1px solid #ff5e52;
}
#menu ul li ul li a{
    font-size: 14px;
}
/*创建二级菜单*/
#menu ul li ul{
display: none;
top: 0px;
width: 200px;
border: 1px solid #dedede;
border-bottom: none;
position: absolute;
left: 100px;
}
#menu ul li:hover ul{
display: block;
}
#menu ul li:hover ul li a{
display: block;
font-size: 14px;
border: 1px solid #ff5e52;
}