#resImage_308 {
    display:block;
    overflow:hidden;
    background-image:url('https://greatstbarts900.firthdesign.co.uk/assets/images/5/the-company-of-rafhere-54e5ed65.jpg');
    background-repeat:no-repeat;
    background-position:center center;
        width:100%;
    background-size: cover;
        height:300px;
}
@media screen and (min-width:700px){
    #resImage_308 {
        background-image:url('https://greatstbarts900.firthdesign.co.uk/assets/images/c/the-company-of-rafhere-df023899.jpg');
                height:400px;
    }
}
@media screen and (min-width:980px){
    #resImage_308 {
        background-image:url('https://greatstbarts900.firthdesign.co.uk/assets/images/d/the-company-of-rafhere-1d6b7022.jpg');
                height:420px;
    }
}
@media screen and (min-width:1400px){
    #resImage_308 {
        background-image:url('https://greatstbarts900.firthdesign.co.uk/assets/images/b/the-company-of-rafhere-fb86f198.jpg');
                height:420px;
    }
}