@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%;}
@media( min-width: 1920px) {.banner video{height:892px;}}
@media( max-width: 1920px) {.banner video{height:892px;}}
@media( max-width: 1900px) {.banner video{height:882px;}}
@media( max-width: 1850px) {.banner video{height:865px;}}
@media( max-width: 1800px) {.banner video{height:840px;}}
@media( max-width: 1750px) {.banner video{height:815px;}}
@media( max-width: 1700px) {.banner video{height:790px;}}
@media( max-width: 1650px) {.banner video{height:765px;}}
@media( max-width: 1600px) {.banner video{height:740px;}}
@media( max-width: 1550px) {.banner video{height:715px;}}
@media( max-width: 1500px) {.banner video{height:690px;}}
@media( max-width: 1450px) {.banner video{height:665px;}}
@media( max-width: 1400px) {.banner video{height:640px;}}
@media( max-width: 1350px) {.banner video{height:615px;}}
@media( max-width: 1300px) {.banner video{height:590px;}}
@media( max-width: 1250px) {.banner video{height:565px;}}
@media( max-width: 1200px) {.banner video{height:540px;}}
@media( max-width: 1150px) {.banner video{height:515px;}}
@media( max-width: 1100px) {.banner video{height:510px;}}
@media( max-width: 1050px) {.banner video{height:490px;}}
@media( max-width: 1000px) {.banner video{height:470px;}}
@media( max-width: 950px) {.banner video{height:450px;}}
@media( max-width: 900px) {.banner video{height:420px;}}
@media( max-width: 850px) {.banner video{height:400px;}}
@media( max-width: 800px) {.banner video{height:370px;}}
@media( max-width: 750px) {.banner video{height:350px;}}
@media( max-width: 700px) {.banner video{height:330px;}}
@media( max-width: 650px) {.banner video{height:295px;}}
@media( max-width: 600px) {.banner video{height:290px;}}
@media( max-width: 550px) {.banner video{height:270px;}}
@media( max-width: 500px) {.banner video{height:250px;}}
@media( max-width: 450px) {.banner video{height:230px;}}
@media( max-width: 400px) {.banner video{height:175px;}}
@media( max-width: 350px) {.banner video{height:160px;}}








.sydw-pic{margin-top:15px;}