#stuck_container {
    -webkit-transition: all 0.4s ease;
    -moz-transition: all 0.4s ease;
    -ms-transition: all 0.4s ease;
    -o-transition: all 0.4s ease;
    transition: all 0.4s ease;
}

.isStuck {
    -webkit-transition: all 0.2s ease;
    -moz-transition: all 0.2s ease;
    -ms-transition: all 0.2s ease;
    -o-transition: all 0.2s ease;
    transition: all 0.2s ease;
    box-shadow: 5px 1px 5px rgba(0, 0, 0, 0.5);
}

.isStuck .menuBox {
    margin: 0;
    -webkit-transition: all 0.4s ease;
    -moz-transition: all 0.4s ease;
    -ms-transition: all 0.4s ease;
    -o-transition: all 0.4s ease;
    transition: all 0.4s ease;
}

@media (max-width: 979px) {
    #stuck_container {
        position: relative !important;
        box-shadow: none;
    }

    .pseudoStickyBlock {
        height: 0 !important;
    }
}