.r2b2-ad::before {
    content: 'Ad';
    font-family: sans-serif;
    font-size: 12px;
    line-height: 12px;
    font-weight: bold;
    padding: 0.3em;
    border-radius: 3px;
    color: #FF9933;
    background: black;
    position: absolute;
    bottom: -20px;
    right: 0;
}

.r2b2-ad {
    display: block;
    position: relative;
    min-height: 1px;
    margin: auto auto 20px;
    padding: 0;
    text-align: center;
}