body {
    font-family: 'Arial', sans-serif;
    background-color: #f0f0f0;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
}

.container {
    text-align: center;
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

input {
    padding: 8px;
    margin: 10px 0;
}

button {
    padding: 10px;
    background-color: #4caf50;
    color: #fff;
    border: none;
    cursor: pointer;
    border-radius: 4px;
}

button:hover {
    background-color: #45a049;
}

#result {
    margin-top: 20px;
    font-weight: bold;
}