radio, checkbox

늘 헷갈림..why?
아마도 많이 하지 않은 탓이겟죠

<section>
        <h2>Cat Form</h2>
        <form action="https://freecatphotoapp.com/submit-cat-photo">
          <fieldset>
            <legend>Is your cat an indoor or outdoor cat?</legend>
            <label><input id="indoor" type="radio" name="indoor-outdoor" value="indoor" checked> Indoor</label>
            <label><input id="outdoor" type="radio" name="indoor-outdoor" value="outdoor"> Outdoor</label>
          </fieldset>
          <fieldset>
            <legend>What's your cat's personality?</legend>
            <input id="loving" type="checkbox" name="personality" value="loving" checked> <label for="loving">Loving</label>
            <input id="lazy" type="checkbox" name="personality" value="lazy"> <label for="lazy">Lazy</label>
            <input id="energetic" type="checkbox" name="personality" value="energetic"> <label for="energetic">Energetic</label>
          </fieldset>
          <input type="text" name="catphotourl" placeholder="cat photo URL" required>
          <button type="submit">Submit</button>
        </form>
      </section>