.ad-list {
    max-height: 0;
    overflow: hidden;
    transition: max-height 1s ease-in-out;
    display: flex;
    flex-wrap: wrap;
}

.ad-list.show {
    max-height: 1000px;
}

.ad-container {
    width: 50%;
}

.ad-container img {
    display: table;
    width: 100%;
}