<div class="mb-3">
<div class="form-label">선택</div>
<select class="form-select">
<option value="1">옵션 1</option>
<option value="2">옵션 2</option>
<option value="3">옵션 3</option>
</select>
</div>
<div class="mb-3">
<div class="form-label">다중 선택</div>
<select class="form-select" multiple="">
<option value="1">옵션 1</option>
<option value="2">옵션 2</option>
<option value="3">옵션 3</option>
</select>
</div>