#resImage_239 {
    display:block;
    overflow:hidden;
    background-image:url('https://greatstbarts900.com/assets/images/1/about-us-a36f63ed.jpg');
    background-repeat:no-repeat;
    background-position:center center;
        width:100%;
    background-size: cover;
        height:300px;
}
@media screen and (min-width:700px){
    #resImage_239 {
        background-image:url('https://greatstbarts900.com/assets/images/3/about-us-e05e4022.jpg');
                height:400px;
    }
}
@media screen and (min-width:980px){
    #resImage_239 {
        background-image:url('https://greatstbarts900.com/assets/images/d/about-us-d519626d.jpg');
                height:420px;
    }
}
@media screen and (min-width:1400px){
    #resImage_239 {
        background-image:url('https://greatstbarts900.com/assets/images/4/about-us-bc70eb70.jpg');
                height:420px;
    }
}