body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    background-color: #f9f9f9;
    color: #333;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    margin: 0;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

p {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 2rem;
}

button {
    background-color: #007aff;
    color: white;
    border: none;
    border-radius: 12px;
    padding: 15px 30px;
    font-size: 1.2rem;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

button:hover {
    background-color: #0056b3;
}

#result {
    font-size: 1.5rem;
    margin-top: 2rem;
    color: #007aff;
    visibility: hidden;
    animation: bounce 0.5s infinite alternate;
}

@keyframes bounce {
    from {
        transform: translateY(0);
    }
    to {
        transform: translateY(-10px);
    }
}