.gradient-custom {
    /* fallback for old browsers */
    background: #6a11cb;
    
    /* Chrome 10-25, Safari 5.1-6 */
    background: -webkit-linear-gradient(to right, rgb(10, 141, 10), rgb(37, 252, 73));
    
    /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */
    background: linear-gradient(to right, rgb(4, 131, 15), rgb(14, 219, 41))
    }