.clx::after {
  content: '';
  display: block;
  clear: both;
}

header {
  width: 100%;
  background: #fff;
}

.new-nav {
  width: 1200px;
  margin: 0 auto;
}

.new-nav a.new-logo {
  float: left;
  width: 169px;
  height: 80px;
  background: url(//www.atguigu.com/images/aboutus_new/logo.png)center 28px no-repeat;
}

.new-nav nav {
  float: left;
  margin-left: 44px;
  line-height: 1;
}

.new-nav nav a {
  float: left;
  padding: 44px 33px 20px 33px;
  font-size: 16px;
  color: #272848;
  position: relative;
  cursor: pointer;
}

.new-nav nav a:hover {
  color: #0c9;
  text-decoration: none;
}

.new-nav nav a .nav-crow {
  display: inline-block;
  width: 11px;
  height: 5px;
  background: url(//www.atguigu.com/images/aboutus_new/crow.png)center center no-repeat;
  margin-left: 6px;
  position: relative;
  top: -2px;
}

.new-nav nav a.nav-xq {
  padding-left: 54px;
}

.new-nav nav a.nav-xq::after {
  content: '';
  width: 17px;
  height: 17px;
  background: url(//www.atguigu.com/images/aboutus_new/gift.png)center center no-repeat;
  position: absolute;
  left: 31px;
}

.kcbox {
  width: 210px;
  position: absolute;
  z-index: 999999999 !important;
  left: 0px;
  top: 80px;
  background: #fff;
  border-right: none;
  box-shadow: 0 0 10px rgb(0, 0, 0, .1);
  border-radius: 3px;
  overflow: hidden;
  display: none;
  padding-bottom: 15px;
}

.kcbox li {
  width: 100%;
  float: left;
  box-sizing: border-box;
  line-height: 1;
}

.kcbox li a {
  display: block;
  line-height: 22px;
  overflow: hidden;
  color: #272848;
  text-align: left;
  font-size: 14px;
}

.kcbox li a.java-course {
  padding: 15px 0 15px 50px;
  color: #272848;
  text-align: left;
  float: left;
  background: url(//www.atguigu.com/images/index_new/java.png) 20px center no-repeat;

}

.kcbox li a.jichuban-course {
  padding: 15px 0 15px 50px;
  color: #272848;
  text-align: left;
  float: left;
  background: url(//www.atguigu.com/images/index_new/hot.png) 20px center no-repeat;

}

.kcbox li a.jichuban-course:hover,
.kcbox li a.java-course:hover,
.kcbox li a.html5-course:hover,
.kcbox li a.bd-course:hover,
.kcbox li a.wh-course:hover,
.kcbox li a.bj-course:hover,
.kcbox li a.sz-course:hover,
.kcbox li a.dc-course:hover,
.kcbox li a.ui-course:hover {
  color: #0c9;
}

.kcbox li a.html5-course {
  padding: 15px 0 15px 50px;
  color: #272848;
  text-align: left;
  float: left;
  background: url(//www.atguigu.com/images/index_new/web.png) 20px center no-repeat;

}

.kcbox li a.bd-course {
  padding: 15px 0 15px 50px;
  color: #272848;
  float: left;
  background: url(//www.atguigu.com/images/index_new/bigdata.png) 20px center no-repeat;
  overflow: hidden;

}

.kcbox li a.ui-course {
  padding: 15px 0 15px 50px;
  color: #272848;
  float: left;
  background: url(//www.atguigu.com/images/index_new/ui.png) 20px center no-repeat;
  overflow: hidden;

}

.kcbox li a.dc-course {
  padding: 15px 0 15px 50px;
  color: #272848;
  float: left;
  background: url(//www.atguigu.com/images/index_new/dc.png) 20px center no-repeat;
  overflow: hidden;
}

.kcbox li a.iot-course {
  padding: 15px 0 15px 50px;
  color: #272848;
  float: left;
  background: url(//www.atguigu.com/images/index_new/iot.png) 20px center no-repeat;
  background-size: 20px;
  overflow: hidden;

}

.kcbox li a.ai-course {
  padding: 15px 0 15px 50px;
  color: #272848;
  float: left;
  background: url(//www.atguigu.com/images/index_new/ai.png) 20px center no-repeat;
  background-size: 20px;
  overflow: hidden;

}
.kcbox li a.linux-course {
  padding: 15px 0 15px 50px;
  color: #272848;
  float: left;
  background: url(//www.atguigu.com/images/index_new/linux.png) 20px center no-repeat;
  background-size: 20px;
  overflow: hidden;

}
.kcbox li a.hm-course {
  padding: 15px 0 15px 50px;
  color: #272848;
  float: left;
  background: url(//www.atguigu.com/images/index_new/hm.png) 20px center no-repeat;
  background-size: 20px;
  overflow: hidden;

}

.vdbox {
  width: 115px;
  position: absolute;
  z-index: 999999999 !important;
  left: 10px;
  top: 80px;
  background: #fff;
  border-right: none;
  box-shadow: 0 0 10px rgb(0, 0, 0, .1);
  border-radius: 3px;
  box-sizing: border-box;
  display: none;
}

.vdbox li {
  float: none;
  box-sizing: border-box;
  line-height: 1;
  width: 100%;
}

.vdbox li a {
  display: block;
  line-height: 22px;
  overflow: hidden;
  color: #272848;
  text-align: left;
  font-size: 14px;
  padding: 15px 0 15px 30px;
  width: 100%;
  box-sizing: border-box;
  float: none;
  line-height: 1;
}

.xqbox {
  width: 150px;
  position: absolute;
  z-index: 999999999 !important;
  top: 80px;
  background: #fff;
  border-right: none;
  box-shadow: 0 0 10px rgb(0, 0, 0, .1);
  border-radius: 3px;
  box-sizing: border-box;
  display: none;
 
}

.xqbox li {
  float: none;
  box-sizing: border-box;
  line-height: 1;
  width: 100%;
  list-style: none;
  position: relative;
  height: 52px;
}
.xqbox li:hover{
  background-color: #eee;
}
.xqbox li a {
  display: block;
  line-height: 22px;
  overflow: hidden;
  color: #272848;
  text-align: left;
  font-size: 14px;
  padding: 15px 0 15px 60px;
  width: 100%;
  box-sizing: border-box;
}

.xqbox li a.bj-course::before {
  content: '北京';
  position: absolute;
  line-height: 18px;
  top: 15px;
  left: 20px;
  background: #ff514d;
  padding: 2px 5px;
  color: #fff;
  font-size: 12px;
  text-align: center;
  border-radius: 3px;
}


.xqbox li a.sz-course::before {
  content: '深圳';
  position: absolute;
  line-height: 18px;
  top: 15px;
  left: 20px;
  background: #488eff;
  color: #fff;
  font-size: 12px;
  text-align: center;
  padding: 2px 5px;
  border-radius: 3px;
}

.xqbox li a.wh-course::before {
  content: '武汉';
  position: absolute;
  line-height: 18px;
  top: 15px;
  left: 20px;
  background: #ff3b8b;
  color: #fff;
  padding: 2px 5px;
  border-radius: 3px;
  font-size: 12px;
}

.xqbox li a.xa-course::before {
  content: '西安';
  position: absolute;
  line-height: 18px;
  top: 10px;
  left: 20px;
  background: #d35500;
  color: #fff;
  font-size: 12px;
  text-align: center;
  padding: 2px 5px;
  border-radius: 3px;
}

.xqbox li a.cd-course::before {
  content: '成都';
  position: absolute;
  line-height: 18px;
  top: 10px;
  left: 20px;
  background: #00c4b5;
  color: #fff;
  font-size: 12px;
  text-align: center;
  padding: 2px 5px;
  border-radius: 3px;
}

.kch:hover .kcbox {
  display: block;
}

.xqh:hover .xqbox {
  display: block;
}

.freevideo:hover .vdbox {
  display: block;
}

.kcbox li {
  list-style: none;
}

.kcbox li:hover {
  background: #eee;
}

.vdbox li:hover {
  background: #eee;
}

.xqbox li:hover {
  background: #eee;
}