body {
    font-size: 14px;
    background: #f8f8f8;
}
.pageurl {
    width: 1200px;
}
/* wrapper */
.wrapper {
    width:1200px;
    margin:0 auto 10px;
    background: #fff;
}

.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: 25%;
  height: 46px;
  line-height: 46px;
}

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