<style>
        body {
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            margin: 0;
            background-color: #f8f9fa;
            font-family: Arial, sans-serif;
        }

        .countdown {
            text-align: center;
            font-size: 24px;
            font-weight: bold;
            color: #333;
            background: #fff;
            padding: 20px;
            border: 2px solid #ddd;
            border-radius: 10px;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
        }

        .countdown span {
            color: #007bff;
        }
    </style>