.news_navWrap{
    display: none;
}
.special_ul{
    width: 1200px;
    margin: 50px auto;
    overflow: hidden;
}
.special_li{
    width: calc(100%/3 - 14px);
    height: 118px;
    margin-right: 21px;
    margin-bottom: 20px;
    float: left;
}
.special_li:nth-child(3n){
    margin-right:0;

}
.special_li img{
    width: 100%;
    height: 100%;
}