.custom-alert {
            display: none;
            position: fixed;
            top: 40%;
            left: 50%;
            transform: translate(-50%, -50%);
            background-color: #f8d7da;
            color: #721c24;
            padding: 10px;
            border: 1px solid #f5c6cb;
            border-radius: 5px;
            text-align: center;
        }