body {
    font-family: 'Arial', sans-serif;
    background-color: #f8f9fa;
}

.container {
    max-width: 600px;
    margin-top: 20px;
}

#result {
    margin-top: 20px;
    padding: 15px;
    background-color: #e9ecef;
    border-radius: 5px;
}