.form-group {
    margin-bottom: 15px;
}

label {
    display: block;
    font-weight: 600;
    margin-bottom: 6px;
}

input[type="text"] {
    width: 300px;
    padding: 8px;
}

button {
    padding: 8px 16px;
}

#result {
    margin-top: 15px;
    font-weight: bold;
}