.bglogin {
    background-image: url("/images/login/login_bg.png");
    position: absolute;
    left: 0;
    z-index: 9;
    background-repeat: no-repeat;
    background-position: center center;
    width: 100%;
    height:800px;
}

@media screen and (min-width: 1921px) {
    .bglogin { top: 0%;}
}
/* 设置了浏览器宽度不小于1201px时 abc 显示1200px宽度 */

@media screen and (max-width: 1920px) {
    .bglogin {top: 0%;}
}
/* 设置了浏览器宽度不大于1200px时 abc 显示900px宽度 */

@media screen and (max-width: 1500px) {
    .bglogin {top: 5%;}
}
@media screen and (max-width: 1366px) {
    .bglogin {top: 0%;}
}
/* 设置了浏览器宽度不大于900px时 abc 显示200px宽度 */


.login-main {
    top: 43% !important;
    position: relative !important;
}