.i-sticky {
    position: relative;
    position: -webkit-sticky;
    position: sticky;
    top: 0;
    z-index: 99999;
    background-color: #fff;
}
.block-dfp iframe{
    margin: auto;
    display: block;
}
.ad-zone-sidebar + section {
    margin-top: -188px;
}
.logged-in .ad-zone-sidebar + section {
    margin-top: 0px;
}