body {
    background: #0f0f0f;
    color: #fff;
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.card {
    background: #1c1c1c;
    padding: 30px;
    border-radius: 12px;
    text-align: center;
}

button {
    background: #10a37f;
    border: none;
    padding: 12px 20px;
    border-radius: 8px;
    cursor: pointer;
    color: #fff;
    font-size: 16px;
}

button:hover {
    transform: scale(1.05);
}