body {
    font-family: Arial, sans-serif;
    background-color: #f2f2f2;
}

.container {
    max-width: 800px;
    margin: 50px auto;
    text-align: center;
}

h1 {
    margin-bottom: 20px;
}

#result {
    margin-top: 30px;
    font-size: 24px;
}