body {
    font-family: Arial, sans-serif;
    padding: 20px;
    background-color: #f0f2f5;
}
h1 {
    color: #333;
}
button {
    padding: 10px 20px;
    margin: 5px;
    font-size: 16px;
    cursor: pointer;
    border: none;
    border-radius: 5px;
    background-color: #4CAF50;
    color: white;
}
button:hover {
    background-color: #45a049;
}
#result {
    margin-top: 20px;
    padding: 15px;
    background-color: white;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    white-space: pre-wrap;
}