.sparkd-ad-container {
    margin: 2em auto;
    text-align: center;
    clear: both;
    width: 100%;
    box-sizing: border-box;
}

.sparkd-ad-link {
    display: inline-block;
    width: 100%;
}

.sparkd-ad-image {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
}

.sparkd-ad-label {
    display: block;
    font-size: 11px;
    color: #999;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 4px;
    text-align: center;
}

/* Responsive: on small screens, constrain to viewport */
@media (max-width: 768px) {
    .sparkd-ad-container {
        margin: 1.5em auto;
    }
}