.pages-banner-box{
    width: 100%;
    display: block;
    position: relative;
    overflow: hidden;
}
.pages-main-bg{
    height: 600px;
    width: 100%;
    display: block;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
}


@media only screen and (max-width: 1000px){
    .pages-main-bg{
        height: 450px;
    }
}
@media only screen and (max-width: 550px){
    .pages-main-bg{
        height: 300px;
    }
}