.float-block {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    text-align: center;
    font-size: 0;
    width: inherit;
    transform: translateZ(0);
}

.float-block .top-ad {
    min-height: 200vh;
}

.float-block .top-ad:last-child {
    min-height: initial;
    flex-grow: 1;
}

.float-block .top-ad__wrapper {
    position: sticky;
    top: 110px;
}