버튼을 두개 불러왔는데 안뜹니다. 왜?

<div class="post1">
    <div class="form-floating mb-3">
        <input type="email" class="form-control" id="floatingInput" placeholder="name@example.com">
        <label for="floatingInput">영화URL</label>
    </div>
        <div class="form-floating">
            <textarea class="form-control" placeholder="Leave a comment here" id="floatingTextarea"></textarea>
            <label for="floatingTextarea">코멘트</label>
        </div>
    <div class="input-group mb-3">
        <label class="input-group-text" for="inputGroupSelect01">별점</label>
        <select class="form-select" id="inputGroupSelect01">
            <option selected>--선택하기--</option>
            <option value="1">One</option>
            <option value="2">Two</option>
            <option value="3">Three</option>
            <option value="4">four</option>
            <option value="5">five</option>
    </div>
        <div class="button1">

            <button type="button" class="btn btn-dark">열기</button>
            <button type="button" class="btn btn-light">L닫기</button>
        </div>

    </select>