@media all and (max-width: 768px) {
    #menuTopicsSite {
        display: none;
    }

    #menuTopicsSiteMobile {
        display: block;
    }

    .mobile-topic-main {
        padding-left: 15px;
        background: #f1f1f1;
    }
}

@media all and (min-width: 769px) {
    #menuTopicsSiteMobile,
    .mobile-topic-main {
        display: none;
    }
}