#resImage_299 {
    display:block;
    overflow:hidden;
    background-image:url('https://www.glendalejoinery.co.uk/assets/images/b/contact-header-f7abcbeb.jpg');
    background-repeat:no-repeat;
    background-position:center center;
        width:100%;
    background-size: cover;
        height:500px;
}
@media screen and (min-width:700px){
    #resImage_299 {
        background-image:url('https://www.glendalejoinery.co.uk/assets/images/3/contact-header-0acd1d4e.jpg');
                height:500px;
    }
}
@media screen and (min-width:980px){
    #resImage_299 {
        background-image:url('https://www.glendalejoinery.co.uk/assets/images/b/contact-header-f0262712.jpg');
                height:500px;
    }
}
@media screen and (min-width:1400px){
    #resImage_299 {
        background-image:url('https://www.glendalejoinery.co.uk/assets/images/0/contact-header-4e399dbd.jpg');
                height:500px;
    }
}