body {
    /* color: #ffffff;
    font-family: "Roboto"; */
    background: 
    linear-gradient(
            rgba(0, 0, 0, 0.5) 100%,
            rgba(0, 0, 0, 0.5) 100%
        ),
        url("../img/img3.jpg") !important;
    background-repeat: no-repeat  !important;
    background-attachment: fixed  !important;
    background-position: center  !important;
    background-size: cover  !important;
    background-blend-mode:saturation !important;
}