.list-imgtitle{
height: 150px;
  
   margin-top: 10px;
   border-bottom: 1px solid #ddd;
   background-image: url(../images/cat_liuxue.jpg);
   background-repeat: no-repeat;
   background-size: 100% 100%;}
.list-contenttitle p{
    font-size: 14px;
    line-height: 30px;
    border-top: 2px solid #d9d9d9;
    border-bottom:1px solid #d9d9d9;
    margin-top: 8px;
    margin-bottom: 20px;}
.list-nav{
    padding-left: 0px;
    min-height: 800px;
    border-right: 1px solid #d9d9d9;
    position: relative;
    overflow: hidden;}
.list-nav img{
    position: absolute;
    top: 200px;
    opacity: 0.1;
    filter:Alpha(opacity=10);}
.list-nav li{
    list-style-type: none;
    text-decoration: none;
    font-size: 18px;
    line-height: 36px;}
.list-nav span{
    font-size: 12px;
    color: red;}
.list-container{
    padding-top: 20px;}