body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    text-align: center;
    margin: 50px;
}

h1 {
    color: #333;
}

#kv-form {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 20px;
}

label {
    margin: 10px 0;
}

input[type="text"] {
    padding: 10px;
    font-size: 16px;
    width: 300px;
}

button[type="submit"] {
    padding: 10px;
    font-size: 16px;
    background-color: #4caf50;
    color: white;
    border: none;
    cursor: pointer;
    margin-top: 10px;
}

button[type="submit"]:hover {
    background-color: #45a049;
}

#result {
    margin-top: 20px;
}