#resImage_250 {
    display:block;
    overflow:hidden;
    background-image:url('https://perform.campden.school.firthdesign.co.uk/assets/images/1/community-benefits-c442c0f7.jpg');
    background-repeat:no-repeat;
    background-position:center center;
        width:100%;
    background-size: cover;
        height:450px;
}
@media screen and (min-width:700px){
    #resImage_250 {
        background-image:url('https://perform.campden.school.firthdesign.co.uk/assets/images/e/community-benefits-5cb5bef9.jpg');
                height:400px;
    }
}
@media screen and (min-width:980px){
    #resImage_250 {
        background-image:url('https://perform.campden.school.firthdesign.co.uk/assets/images/6/community-benefits-ac5e7f4e.jpg');
                height:400px;
    }
}
@media screen and (min-width:1400px){
    #resImage_250 {
        background-image:url('https://perform.campden.school.firthdesign.co.uk/assets/images/9/community-benefits-7a50b12e.jpg');
                height:450px;
    }
}