body {
        margin: 0;
        font-family: Arial, sans-serif;
        background: #F5F5DC;
        display: flex;
        justify-content: center;
        align-items: center;
        height: 100vh;
        text-align: center;
    }

    .box {
        background: white;
        padding: 30px;
        border-radius: 10px;
        box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        max-width: 400px;
    }

    h1 {
        color: #2c3e50;
        margin-bottom: 15px;
    }

    p {
        color: #555;
        margin-bottom: 20px;
    }

    .timer {
        font-size: 24px;
        font-weight: bold;
        color: #27ae60;
    }