.custom-header-ad,
.custom-footer-ad,
.custom-post-ad,
.custom-reload-ad {
    background: #f9f9f9;
    border: 1px dashed #333;
    padding: 10px;
    margin: 15px 0;
    text-align: center;
    transition: opacity 0.5s ease-in-out;
}