.content {
    width: 100%;
    margin: 50px 0;
    margin-top: 10px;
    background-color: #f7f8fa;
    font-family: Microsoft YaHei;
}

.content-first {
    margin: 0 auto;
    width: 1200px;
    font-size: 0;
}

.content-first-item {
    display: inline-block;
    width: 1200px;
    height: 105px;
    background-color: white;
    box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.1);
    margin-top: 20px;
}

.content-first-item-video{
    width: 1200px;
    margin-top: 20px;
}

.content-first-item:hover {
    box-shadow: 0px 0px 16px rgba(0, 0, 0, 0.1);
}

.content-first-item-margin {
    margin-bottom: 70px;
}

.item-img {
    float: left;
    margin-left: 37px;
    margin-top: 40px;
    width: 80px;
    height: 80px;
}

.item-right {
    margin-left: 35px;
}

.item-title {
    font-size: 25px;
    color: #333;
    font-weight: bold;
    text-align: center;
    letter-spacing: 5px;
    margin-bottom: 20px;
}

.item-ul {
    width: 100%;
    display: flex;
    align-items: end;
    flex-direction: row;
    flex-wrap: wrap;
}

.item-ul-video{
    width: 100%;
    height: 180px;
    padding-left: 0;
    display: flex;
    justify-content: space-between;
}

.item-li-video{
    width: 226px;
    height: 170px;
    border-left: 1px solid rgba(0, 0, 0, 0.1);
    border-right: 1px solid rgba(0, 0, 0, 0.1);
    background: #fff;
    cursor: pointer;
    box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.1);
}

.item-li-video:hover{
    border: 1px solid #003399;
    border-top: 5px solid #003399;
}

.item-li-video:hover .item-li-video-title{
    color: #003399;
    font-weight: 900;
}

.item-li-bg{
    width: 226px;
    height: 128px;
}

.item-li-video-title{
    font-size: 18px;
    margin-left: 20px;
    margin-top: 10px;

}

.item-li {
    width: 32%;
    height: 40px;
    font-size: 18px;
    color: #333;
}

.item-li:hover {
    background-color: #EEF4FC;
    color: #003399;
    cursor: pointer;
}

.item-li:hover .item-li-block {
    background-color: #EEF4FC
}

.item-li:hover .item-li-img {
    display: inline;
}

.item-li:hover .item-li-Novice-img {
    display: inline;
}

.item-li-first {
    margin-top: 10px;
}

.item-li-block {
    vertical-align: middle;
    display: inline-block;
    background-color: #FFCC00;
    width: 8px;
    height: 8px;
    float: left;
    margin-top: 16px;
    border-radius: 4px;
}

.item-li-title {
    /*width: 205px;*/
    line-height: 40px;
    vertical-align: middle;
    display: inline-block;
    float: left;
    margin-left: 14px;
}

.item-li-img {
    vertical-align: middle;
    display: none;
    width: 6px;
    height: 11px;
    float: right;
    margin-top: 20px;
    margin-right: 10px;
}

.item-li-Novice-img{
    vertical-align: middle;
    display: none;
    width: 6px;
    height: 11px;
    float: right;
    margin-top: 14.5px;
    margin-right: 10px;
}

.content-second {
    margin: 0 auto;
    margin-top: 80px;
    width: 1200px;
}

.content-second-title {
    margin-top: 0px;
    text-align: center;
    font-size: 40px;
    font-weight: bold;
    color: #333;
    letter-spacing: 10px;
}

.content-second-first {
    margin-top: 40px;
    font-size: 0;
}

.content-second-first a {
    text-decoration: none;
    background-color: white;
}

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

.second-item-bg {
    margin-left: 18.6px;
    display: inline-block;
    width: 286px;
    height: 277px;
    background-color: white;
    box-shadow: 0px 0px 4px rgba(0, 0, 0, 0.1);
}

.second-item-bg:hover {
    box-shadow: 0px 0px 16px rgba(0, 0, 0, 0.1);
}

.second-item-bg-margin {
    margin-left: 0;
}

.second-item-bg:hover {
    cursor: pointer;
}

.second-item-bg:hover .second-item-title {
    color: #003399;
}

.second-item-img {
    margin: 0px auto;
    margin-top: 50px;
    display: block;
    width: 70px;
    height: 70px;
}

.second-item-title {
    margin-top: 25px;
    margin-bottom: 10px;
    text-align: center;
    font-size: 18px;
    color: #333;
}

.second-item-sub-title {
    text-align: center;
    font-size: 14px;
    color: #9B9B9B;
}

.no-margin-left {
    margin-left: 0px;
}

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


/* video */

.mask {
    position: fixed;
    left: 0%;
    top: 0%;
    background-color: rgba(0, 0, 0, 0.5);
    width: 100%;
    height: 100%;
}

.videos {
    font-family: Microsoft YaHei;
    position: fixed;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 80%;
    z-index: 100;
    display: block;
}

.vclose {
    font-family: Microsoft YaHei;
    position: absolute;
    right: 3%;
    top: 3%;
    border-radius: 100%;
    width: 2.4rem !important;
    height: 2.4rem !important;
    border: none;
}


.tabs {
  margin-top: 50px;
  padding-bottom: 100px;

  overflow: hidden;
}

.tab-links {
  display: inline-block;
  margin-bottom: 0;
  width:100%;
  
 /* position: relative;*/
}
 
.tab-links li {
  display: inline-block;
  width: 144px;
  list-style: none;
  float: left;
  margin-right: 7px;
box-sizing: border-box;
position: relative;
  top: 48px;
  border-top-left-radius: 6px;
border-top-right-radius: 6px;
background-color: #f3f3f3;
border:1px solid #ccc;
border-bottom: none;
}

.tab-links li.tab1{
  width: 143px;
}
 .tab-links li.tab8{
    margin-right: 0;
 }
.tab-links li a {
  display: inline-block;
  padding: 12px;
  width:100%;
  display: inline-block;
  text-decoration: none;
  box-sizing: border-box;
  text-align: center;
  font-size: 18px;
  height: 68px;
  float: left;
  color: #666;
  
}
.tab-links li.tab7 a{
    padding-top: 25px;
}
.tab-links li.active {
  /*border:1px solid #003399;
  color: #003399;
  background: #fff;*/
  position: relative;
  top:1px;
  z-index: 99;
  border:1px solid #003399;
  border-top:5px solid #003399;

  border-bottom:none;
}

.tab-links li.active a{
    color: #003399;
    
  padding-top:53px;
  height: 113px;  
}
.tab-links li.tab1.active a{
    background: url("/cmsweb/assets/guide/img/tab01_icon.png") center top 8px no-repeat,#fff;
}
.tab-links li.tab2.active a{
    background: url("/cmsweb/assets/guide/img/tab02_icon.png") center top 8px no-repeat,#fff;
}
.tab-links li.tab3.active a{
    background: url("/cmsweb/assets/guide/img/tab03_icon.png") center top 8px no-repeat,#fff;
}
.tab-links li.tab4.active a{
    background: url("/cmsweb/assets/guide/img/tab04_icon.png") center top 8px no-repeat,#fff;
}
.tab-links li.tab5.active a{
    background: url("/cmsweb/assets/guide/img/tab05_icon.png") center top 8px no-repeat,#fff;
}
.tab-links li.tab6.active a{
    background: url("/cmsweb/assets/guide/img/tab06_icon.png") center top 8px no-repeat,#fff;
}
.tab-links li.tab7.active a{
    padding-top:68px;
    background: url("/cmsweb/assets/guide/img/tab07_icon.png") center top 8px no-repeat,#fff;
}
.tab-links li.tab8.active a{
    background: url("/cmsweb/assets/guide/img/tab08_icon.png") center top 8px no-repeat,#fff;
}
 .tab-links li:hover a{
    color: #003399;
 }
.tab-links li.active:hover a{
    color: #003399;
 }
 .tab-links li:hover{
    color: #003399;
    
 }
.tab-links li.active:hover{
    color: #003399;
    
 }
.tab-content {
  padding:50px 85px;
  background-color: white;
  /*box-shadow: 0px 0px 4px rgba(0, 0, 0, 0.1);*/
  position: relative;
  top: -4px;
  border: 1px solid #003399;
}
.item-sub-left{
    float: left;
    width:500px;
    

}
.item-sub-right{
    float: right;
    width:50%;
    box-sizing: border-box;
    padding-left: 80px;
    border-left: 1px solid #eee;
}
.item-sub{

}
.item-title-sm{
    padding-left: 12px;
    margin-bottom: 20px;
    
    box-sizing: border-box;
}
.item-sub-left .item-title-sm span{
    background: linear-gradient(transparent 50%, #dfeeff 50%);
    font-size: 26px;
    font-weight: bold;
    color:#333;
   
}
.item-sub-right .item-title-sm span{
    background: linear-gradient(transparent 50%, #fcea98 50%);
    font-size: 26px;
    font-weight: bold;
    color:#333;
    
}
.item-sub-left .item-li-block{
    background-color: #003399;
}
.tab {
  display: none;
  overflow: hidden;
}
 
.tab.active {
  display: block;
}

.tab-content .item-li{
    width:436px;
    height: 50px;
}

.tab-content .item-li{
  font-size: 18px;
}
.tab-content .item-li-title{
  line-height: 50px;
}
.tab-content .item-li-block{
  margin-top: 21px;
}