#resImage_200 {
    display:block;
    overflow:hidden;
    background-image:url('https://www.articulategroup.co.uk/assets/images/f/ups-ab8c637b.jpg');
    background-repeat:no-repeat;
    background-position:center center;
        width:100%;
    background-size: cover;
        height:420px;
}
@media screen and (min-width:700px){
    #resImage_200 {
        background-image:url('https://www.articulategroup.co.uk/assets/images/3/ups-432d00ec.jpg');
                height:500px;
    }
}
@media screen and (min-width:1000px){
    #resImage_200 {
        background-image:url('https://www.articulategroup.co.uk/assets/images/6/ups-8451fca4.jpg');
                height:620px;
    }
}
@media screen and (min-width:1400px){
    #resImage_200 {
        background-image:url('https://www.articulategroup.co.uk/assets/images/7/ups-946e2812.jpg');
                height:620px;
    }
}