.error {
    color: #d00;
}
.promotion-label {
    position: absolute;
    top: 10px;
    left: 10px;
    background-color: rgb(251 146 60); /* 黃色背景 */
    color: white;
    font-size: 14px;
    font-weight: bold;
    padding: 4px 8px;
    border-radius: 4px;
    z-index: 10;
}