.ad-container {
    margin: 20px 0;
    text-align: center;
    min-height: 90px; 
}

.ad-top {
    margin-bottom: 30px;
    border-bottom: 1px solid #eee;
    padding-bottom: 20px;
}

.ad-sidebar {
    position: sticky;
    top: 20px;
    margin: 20px 0;
}

.ad-footer {
    margin-top: 40px;
    border-top: 1px solid #eee;
    padding-top: 20px;
}


@media (max-width: 768px) {
    .ad-sidebar {
        position: static;
    }
}