.header .join {
  background-color: #1c77e7;
}
.header .join >a{
	color: #fff;
} 
.ad > div {
  position: relative;
}
.ad > div > div {
  position: absolute;
  display: inline-block;
  top: 240px;
  left: 50px;
  text-align: left;
}
.ad > div > div p {
  font-size: 20px;
}
.content {
  background-color: #F5F5F5;
}
.content .introduce {
  background-color: #fff;
}
.content .introduce > div {
  width: 1136px;
  margin: 0 auto;
  padding: 50px 0;
}
.content .introduce > div > div {
  padding-top: 40px;
  width: 890px;
  margin: 0 auto;
  position: relative;
}
.content .introduce > div > div>ul{
	position: absolute;
	top: 100px;
	width: 290px;
	background: #eee;
	text-align: center;
	display: none;
}
.content .introduce > div > div li{
	line-height: 42px;
	cursor: pointer;
	font-size: 14px;
}
.content .introduce > div > div li:hover{
	background: #ccc;
}
.content .introduce p {
  font-size: 18px;
  color: #666;
  line-height: 36px;
}
.content .introduce span {
  width: 290px;
  line-height: 60px;
  height: 60px;
  text-indent: 6em;
  font-size: 20px;
  color: #fff;
  background: #1C77E7;
}

.content .introduce span.join_2 {
  background: url(../images/join_2.png) no-repeat;
}
.content > ul {
  width: 1200px;
  margin: 50px auto 10px;
}
.content > ul li {
	display: none;
  padding: 40px 20px;
  background-color: #fff;
  -webkit-box-sizing: border-box;
     -moz-box-sizing: border-box;
          box-sizing: border-box;
}

.content > ul h1 {
  font-size: 26px;
  font-weight: normal;
}
.content > ul h2 {
  font-size: 18px;
  font-weight: normal;
  line-height: 66px;
  height: 66px;
}
.content > ul p {
  font-size: 16px ;
  color: #666;
  line-height: 26px;
  text-align: justify;
  text-justify: inter-ideograph;
}