<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Radio Button Form</title>
</head>
<body>
<form action="/submit-form" method="post">
<fieldset>
<legend>Select your favorite color:</legend>
<input type="radio" id="red" name="color" value="red">
<label for="red">Red</label><br>
<input type="radio" id="blue" name="color" value="blue">
<label for="blue">Blue</label><br>
<input type="radio" id="green" name="color" value="green">
<label for="green">Green</label>
</fieldset>
<br>
<label for="userName">Your Name:</label><br>
<input type="text" id="userName" name="userName" required><br><br>
<input type="submit" value="Submit">
</form>
</body>
</html>