@media (max-width: 991px){
   .layer .search_box .ok{background:none!important; right: 0; color:#fff; box-shadow: none; border:none; height:20px;width:20px;text-align: center;font-size:18px;cursor: pointer;-webkit-appearance:none;appearance:none;border-radius:0;right:10px;top:12px;padding:0;}
   .layer .search_box{background:#aaa;}
   .search-box .form-control{width:calc(100% - 50px);background:none;}
   .layer .search_box{display:block;}
   .header-list .search-box .form-control{background:none;}
}

.banner video { width:100%; height:100%; transition: all 0.5s ease 0s; object-fit: fill;}
.banner video{max-width: 100%; width: 100%;
    height: auto;
    background: #000;
    position: absolute;left: 50%;margin-left: -50%;
    bottom: 0;}
.banner {
    margin: 0;
    overflow: hidden;
     position: absolute;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;}
.banner a {
    display: block;
    position: relative;
    height: 100%;}

.banner a img {
    display: none;}

.home {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;}

.home body {
    height: 100%;
    overflow: hidden;
    padding: 0;}
.banner a img {
    display: none;}

.banner .slick,.banner .slick-list,.banner .slick-initialized .slick-slide,.banner .slick-track,.banner a {
    height: 100%;}


@media( max-width: 991px){
.banner a img {
        display: block;}
    .banner video{top:0;}
    
    .banner {
        position: relative;
        margin-top: 50px;}
    
    .body_b {
        width: auto;
        height: auto;
        position: static;
        opacity: 1;
        transform: none;
        overflow: hidden;}

    .body_home {
        height: auto;
        overflow: visible;}

    .home, .home body {
        height: auto;
        overflow: auto;
        overflow-x: hidden;}
    
    }









@media (max-width: 991px){
   .layer .search_box .ok{background:none!important; right: 0; color:#fff; box-shadow: none; border:none; height:20px;width:20px;text-align: center;font-size:18px;cursor: pointer;-webkit-appearance:none;appearance:none;border-radius:0;right:10px;top:12px;padding:0;}
   .layer .search_box{background:#aaa;}
   .search-box .form-control{width:calc(100% - 50px);background:none;}
   .layer .search_box{display:block;}
   .header-list .search-box .form-control{background:none;}
}
.sydw-pic{margin-top:15px;}
.piaochuang{position:fixed;top:600px;z-index:99999999999999999;right:0;}