@media screen and (max-width:1900px) and (min-width:576px) {
    .fullpage-wrapper {
        background: url(../p.jpg) !important;
        background-position: center !important;
        background-repeat: no-repeat !important;
        background-size: cover !important;
        background-attachment: fixed !important;
        z-index: 9 !important;

    }
}