.banner {
    height: 480px;
    text-align: center;
}
.banner img {
    
   height: 100%;
}
.nav-main {
    width: 100%;
    
    height: 50px;
    background-color: #ccc;
}
.nav-main-top {
    position: relative;
}
.nav {
    position: absolute;
    left:50%;
    transform: translate(-50%);
  width: 600px;
padding: 0 40px;
   
}
.nav li {
    height: 50px;
  
    float: left;
    width: 200px;
    text-align: center;
   
    
    line-height: 50px;
    font-size: 16px;
    margin:0 40px;
    
}


.nav li a{
    color: #171717;
}

.nav .active a {
    color: #6790d5;
}

.content-main {
 
    text-align: center;

}
.content-main p {
    color: #171717 !important;
}

.content h5 {
    padding-top:100px;
    font-size: 25px;
    text-align: center;
}
.content h5 a {
    border-bottom: 2px solid #000;
    padding-bottom: 5px;
}

.content p {
    margin-top: 20px;
}

.content-main {
    
    margin-top: 100px;
    /* background-color: #ccc; */
}
.content-main h1{
    font-size: 28px;
}
.content-main h2{
    margin-top: 20px;
    font-size: 16px;
    color: #171717;
    border-bottom: 1px dashed #ccc;
    padding-bottom: 20px;
}
.content-main p {
    line-height: 30px;
}
.news-bottom {
    position: relative;
    height: 295px;
    padding-top: 41px;

}
.news-bottom>p {
    position: relative;
    width: 700px;
    height:87px;
    border-bottom: 1px solid #e6e6e6;
    line-height: 87px;
    color: #c2c2c2;
}
.news-bottom>p span{
    position: absolute;
    right: 0;
    left: auto;
    font-size: 12px;
    color: #cccccc;
}
.return-btn {
    position: absolute;
    right: 0;
    top: 80px;
}
.return-btn a {
    
    display: block;
    float: left;
    width: 50px;
    height: 50px;
    margin-right: 20px;
    background-color:#6790d5 ;
    text-align: center;
    line-height: 50px;

}
.return-btn a:nth-last-child(1){
    margin-right: 0;
    
}
.return-btn a>span {
    font-size: 20px;
    color: #fff;
    
}
.return-btn a:nth-child(1)>span {
    font-size: 20px;
    color: #fff;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);
}

.return-btn .social-share  {
    display: none;
  
  
}
.icon-weibo:before {
    display: none;
}
.social-share .social-share-icon {
    width: 50px !important;
    height: 50px !important;
   border-radius:0 !important;
}
.social-share .icon-weibo:hover{
    background-color: #000 !important;
}
.social-share .icon-weibo {
    border:#000 !important;
}