.header{
  height: 30px;
  line-height: 30px;
  border-bottom: 1px solid #efefef;
  background-color: #ebf0f4;
}
.header .hd_con{
  height: 100%;
  /*background-color: pink;*/
}
.header .hd_con .hd_con_l{
  font-size: 14px;
}
.header .hd_con .hd_con_r ul li{
  float: left;
  position: relative;
}
.header .hd_con .hd_con_r ul li a{
  color: #697178;
}
.header .hd_con .hd_con_r ul li a span{
    cursor: pointer;
    display: inline-block;
    padding: 0 15px;
    font-size: 12px;
    color: #697178;
    border-left: 1px solid #ccd5db;
    line-height: 10px;
}

.head2{
  height: 70px;
  border-bottom: 1px solid #efefef;
  padding: 10px 0;
}

.nav .nav_con ul li{
  width: 11%;
  float: left;
  text-align: center;
}
.nav .nav_con ul li a{
  display: block;
  line-height: 60px;
  color: #000;
  font-size: 16px;
}
.nav .nav_con ul li.on a,.nav .nav_con ul li a:hover,.content .course_tit ul li a{
  background: #0098e8;
  color: #fff;
}