.banner-topo.banner-topo-fixo {
    position: sticky;
    top: 0;
    z-index: 10;
    width: 100%;
    max-width: 900px;
    min-height: 100px;
    background: #f7f9f6;
}

.banner-topo.banner-topo-fixo .adsbygoogle {
    width: 100%;
    height: 100px;
}