body {
    font-family: sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-color: #f0f0f0;
    transition: background-color 1s ease;
}

.container {
    text-align: center;
    background-color: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

input, button {
    margin: 0.5rem;
    padding: 0.5rem;
    border-radius: 5px;
    border: 1px solid #ccc;
}

button {
    cursor: pointer;
    background-color: #007bff;
    color: white;
}

#result {
    margin-top: 1rem;
    font-size: 1.2rem;
}