.divbox{
    width: 1500px;
    height:850px
}
@media screen and (max-width:1400px){
    .divbox{
        width: 950px;
        height: 618px;
    }
}
@media screen and (min-width:1400px) and (max-width:1600px){
    .divbox{
        width: 1100px;
        height: 660px;
    }
}