.s-banner1{
    background-image: url("../images/xwzx.png");
    height: 299px;
}
@media (min-width:1200px) {

}
@media (min-width:768px) {
    .s-banner1{
        height: 612px;
    }
}
@media (min-width:992px) {
    .s-banner1{
        height: 818px;
    }
}