#resImage_515 {
    display:block;
    overflow:hidden;
    background-image:url('https://www.articulategroup.co.uk/assets/images/5/fire-inset2-d5c46de5.jpg');
    background-repeat:no-repeat;
    background-position:center center;
        width:100%;
    background-size: cover;
        height:200px;
}
@media screen and (min-width:700px){
    #resImage_515 {
        background-image:url('https://www.articulategroup.co.uk/assets/images/4/fire-inset2-ceb2adfb.jpg');
                height:300px;
    }
}
@media screen and (min-width:1000px){
    #resImage_515 {
        background-image:url('https://www.articulategroup.co.uk/assets/images/e/fire-inset2-6933eb1b.jpg');
                height:500px;
    }
}
@media screen and (min-width:1400px){
    #resImage_515 {
        background-image:url('https://www.articulategroup.co.uk/assets/images/a/fire-inset2-8568b74b.jpg');
                height:500px;
    }
}