책보면서 따라하구 있는데

<fieldset>
                <legend>배송지 정보</legend>
                <ul>
                    <li>
                        <label for="addr" class="title">주소</label>
                        <input type="text" size="40" id="addr" required>
                    </li>
                    <li>
                        <label for="tel2" class="title">전화번호</label>
                        <input type="tel" id="tel2" required>
                    </li>
                    <li>
                        <label for="comment" class="title">메 모</label>
                        <textarea cols="40" rows="3" id="comment"></textarea>
                    </li>
                </ul>
            </fieldset>


<li></li> 사이에 저렇게 for이랑 class id 쓰는거랑





            <fieldset>
                <legend>주문 정보</legend>
                <ul>
                    <li>
                        <label><input type="checkbox">과테말라 안티구아 (100g) </label>
                        <label><input type="number" value="0" min="0" max="5">개 </label>
                    </li>
                    <li>
                        <label><input type="checkbox">인도네시아 만델링 (100g) </label>
                        <label><input type="number" value="0" min="0" max="5">개 </label>
                    </li>
                    <li>
                        <label><input type="checkbox">탐라는도다(블렌딩) (100g) </label>
                        <label><input type="number" value="0" min="0" max="5">개 </label>
                    </li>
                </ul>
            </fieldset>


요렇게  for class 안쓰고 한줄로 쓰는게 


사람들마다 편한대로 하는거에요 아님 저렇게 쓰는 이유가 있는거에요?"?