/* wrapper */
.wrapper {width:960px; margin:0 auto 10px; border: 1px solid #ddd;}

.catalog {
    background: #fff;
    margin-bottom: 10px;
    padding: 20px 40px 5px;
    color: #999;
}
.catalog h1 {
    margin-bottom: 10px;
    font: 26px/40px "Microsoft Yahei";
    color: #333;
    text-align: center;
}
.catalog span {
    margin: 0 12px;
}
.catalog a, 
.catalog em {
    color: #666;
}
.catalog .spec {
    color: #3876b2;
}

.chapter_list {padding-bottom: 15px; padding-left: 15px;}
.chapter_list li {
  float: left;
  overflow: hidden;
  border-bottom: 1px dotted #d9d9d9;
  width: 278px;
  height: 46px;
  font-size: 14px;
  line-height: 46px;
  padding: 0 20px 0 4px;
}

.u-tags {
    margin-top: 10px;
    padding: 0 10px 10px;
}