body {
    font-family: Arial, sans-serif;
    margin: 50px;
    text-align: center;
}

input {
    padding: 10px;
    font-size: 16px;
    margin: 10px 0;
}

button {
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
}

.result {
    margin-top: 20px;
    font-size: 18px;
    color: green;
}