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<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>Example of option groups</title> </head> <body> <h2>Option groups</h2> <form> <fieldset> <legend>Favorite Film</legend> <label for="film">Film Name: </label> <select name="film" id="film"> <optgroup label="Action"> <option>Action film 1</option> <option>Action film 2</option> <option>Action film 3</option> </optgroup> <optgroup label="Comic"> <option>Comic film 1</option> <option>Comic film 2</option> <option>Comic film 3</option> </optgroup> </select> </fieldset> </form> </body> </html>