.ml-parallax-bg{
    background-attachment: fixed !important;
    background-position: 50% 0;
    background-repeat: no-repeat;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    background-size: cover;
}
@media all and (max-width: 960px) {
    .ml-parallax-bg{
        background-attachment: scroll !important;
        -webkit-background-size: 120vmin;
        -moz-background-size: 120vmin;
        background-size: 120vmin;
    }
}