.promo-banner {
     position: sticky;
     top: 0;
     background-color: #ffcc00;
     color: #000;
     text-align: center;
     padding: 10px;

     z-index: 1000;
     box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
     display: none;
 }