.gradient-custom {


    /* Chrome 10-25, Safari 5.1-6 */
    background: -webkit-linear-gradient(to right, rgb(213, 213, 213), (101, 101, 101));

    /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */
    background: linear-gradient(to right, rgb(205, 205, 205), rgb(101, 101, 101))
}