.sticky-code-block {
    text-align: center;
    align-items: center;
    width: 100%;
    margin: 0 auto;
    height: 600px;
    padding-bottom:10px;
}

.sticky-ad-block {
    top: 30px;
    position: sticky;
    position: -webkit-sticky;
}

.third-sticky {
    position: fixed;
    top: 30;
}