.radial-background {
    
    background: #525252;  /* fallback for old browsers */
    background: -webkit-linear-gradient(to right, #3d72b4, #525252);  /* Chrome 10-25, Safari 5.1-6 */
    background: linear-gradient(to right, #3d72b4, #525252); /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */
}