.gradient-custom {
    /* fallback for old browsers */
    background: #1143cb;

    /* Chrome 10-25, Safari 5.1-6 */
    background: -webkit-linear-gradient(to right, rgb(14, 80, 174), rgb(10, 113, 22));

    /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */
    background: linear-gradient(to right, rgba(91, 118, 214, 0.511), rgba(168, 172, 169, 0.577))
}