body {
    margin: 0;
    padding: 0;
    font-family: sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #3498db;
    color: white;
}

.container {
    text-align: center;
}

.number-container {
    font-size: 3rem;
    margin-bottom: 1rem;
    animation: fadeIn 1s ease-in-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

button {
    background-color: #2ecc71;
    color: white;
    padding: 1rem 2rem;
    border: none;
    border-radius: 5px;
    font-size: 1.2rem;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

button:hover {
    background-color: #27ae60;
}