#site-navigation.submenu-shadow ul.sub-menu, #site-navigation.submenu-shadow ul.children {
    z-index: 9999;
}
.scroll-box {
    background: #f4f4f4;
    border: 2px solid rgba(0, 0, 0, 0.1);
    padding: 15px;
    overflow-y: scroll;
}