.szttc-banner{
    width: 100%;
    min-width: 1100px;
    height: 400px;
    overflow: hidden;
    box-shadow: 0px 5px 10px 0px rgba(91, 53, 34, 0.75);
    background: url(b-1.png) center top no-repeat;
    position: relative;
    z-index: 2;
}.szttc-body{
    height: 800px;
    overflow: hidden;
    width: 100%;
    min-width: 1100px;
    background: url(body-bg.png) center top no-repeat;
}
.szttc-footer{
    height: 190px;
    width: 100%;
    min-width: 1100px;
    background: url(footer-bg.png) center top no-repeat;
}
.main-cnews-wrap{
    width: 1100px;
    margin:50px auto;
}
.main-cnews-title>ul>li{
    width: 260px;
    height: 104px;
    border:3px solid #fff;
    overflow: hidden;
    float: left;
    text-align: center;
    line-height: 104px;
    position: relative;
    border-radius: 26px;
    transition: all .3s;
}
.main-cnews-title>ul>.tab-current{
    border-radius: 52px;
    transition: all .3s;
}
.main-cnews-title>ul>li b{
    position: absolute;
    width: 260px;
    height: 104px;
    top: 0;
    left:0;
    background-color: #4e5f4f;
    filter: opacity(50);
    opacity: .50;
    transition: all .3s;
}
.main-cnews-title>ul>li:hover b{
    
    filter: opacity(24);
    opacity: .24;
}.main-cnews-title>ul>.tab-current:hover b,.main-cnews-title>ul>.tab-current b{
    
    filter: opacity(18);
    opacity: .18;
}
.main-cnews-title>ul>li a{
    position: relative;
    z-index: 2;
    font-size: 22px;
    color: #fff;
    transition: all .3s;
}.main-cnews-title>ul>.tab-current a{
    font-size: 26px;
}
.main-cnews-title>ul>li:not(:first-child){
    margin-left: 12px;
}
.main-cnews-title>ul>li:nth-child(1){
    background: url(ttcnav-1.png) center center no-repeat;
}.main-cnews-title>ul>li:nth-child(2){
    background: url(ttcnav-2.png) center center no-repeat;
}.main-cnews-title>ul>li:nth-child(3){
    background: url(ttcnav-3.png) center center no-repeat;
}.main-cnews-title>ul>li:nth-child(4){
    background: url(ttcnav-4.png) center center no-repeat;
}
.main-cnews-title{
    height: 110px;
    overflow: hidden;
}
.main-cnews-newsbox{
    
    margin-top: 15px;
    overflow: hidden;
}
.ttc-list-items>li{
    float: left;
    width: 350px;
    margin-right: 25px;
    margin-top:25px ;
    overflow: hidden;
}.ttc-list-items>li:nth-child(3n){
    margin-right: 0;
}.ttc-list-items>li img{
    width: 100%;
    height: 200px;
    overflow: hidden;
    transition: all .3s;
}.ttc-list-items>li:hover img{
    opacity: .92;
}.ttc-list-items>li b{
    width: 100%;
    font-weight: 500;
    height: 60px;
    display: block;
    background-color: #fff;
    line-height: 60px;
    font-size: 18px;
    padding:0 .5em;
}.ttc-list-items>li b  a{
    color: #333;
}.ttc-list-items>li:hover b a{
    color: #298c2e;
}