.right-rail {
    display: flex;
    flex-direction: column;
    flex-wrap: nowrap;
    height: 100%;
    justify-content: flex-start;
}

.posterscroll:last-child {
    flex: 1;
}

.posterscroll:last-child .adContainer {
    height: 100%;
}

.ad {
    background-color: #f8f8f8;
    min-height: 250px;
    position: relative;
    width: 300px;
}

#highImpact_topper {
    display: flex;
    width: 970px;
}

#leaderboard_btf {
    height: 90px;
    width: 728px;
}

.ad-label::before {
    content: 'Advertisement';
    text-align: center;
    color: #787878;
    font: 10px/18px 'Helvetica Neue','Arial Nova',Helvetica,Arial,sans-serif;
    display: block;
}

.ad-label {
    position: sticky;
    top: 81px;
}