HTML

html input radio group

	<form action="/your_server.php">
        <p>Please select your favorite animal:</p>
        <input type="radio" id="dog" name="fav_animal" value="Dog">
        <label for="dog">Dog</label><br>
        <input type="radio" id="monkey" name="fav_animal" value="Monkey">
        <label for="monkey">Monkey</label><br>
        <input type="radio" id="cat" name="fav_animal" value="Cat">
        <label for="cat">Cat</label>
        <br><br>
        <input type="submit" value="Submit">
   </form>

html radio group

<fieldset id="group1">
    <input type="radio" value="value1" name="group1">
    <input type="radio" value="value2" name="group1">
</fieldset>