.banner{
    position: relative;
}
.banner>h1{
    position: absolute;
    color: #fff;
    top: calc(50% - 34px / 2);
    left: calc(50% - 112px / 2);
}
.bg-img{
    background-image: url(/uploads/image/smbinews/banner.jpg);
    background-repeat: no-repeat;
    background-position: center;
    height: 30rem;
}