javascript - Bootstrap Button Drop Down在div上方弹出

我希望列表下拉至按钮下方，但下拉菜单并非一直位于当前显示的第一个div上。

的HTML

    <div class="categories row" id = "secondDiv">
      <div class = "col-md-4 header text-center">
        <p id = "columnOne"> Find Your Favorite Celebrity </p>
         <div class="dropdown-container">
            <button class="btn btn-secondary dropdown-toggle btn-outline-danger btn-lg dropdown-toggle" type="button" id="dropdownMenuButton" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false"> JUST
            <span class="caret"></span></button>
                  <div class="dropdown-menu" aria-labelledby="dropdownMenuButton">
                    <a class="dropdown-item" href="#">Justin Bieber <input type="radio" id="ID" name="NAME" value="VALUE"><label for="ID"></label> </a>
                    <a class="dropdown-item" href="#">Taylor Swift <input type="radio" id="ID" name="NAME" value="VALUE"><label for="ID"></label> </a>
                    <a class="dropdown-item" href="#">Jay Z <input type="radio" id="ID" name="NAME" value="VALUE"><label for="ID"></label> </a>
                    <a class="dropdown-item" href="#">Beyonce <input type="radio" id="ID" name="NAME" value="VALUE"><label for="ID"></label> </a>
                    <a class="dropdown-item" href="#">Rihanna <input type="radio" id="ID" name="NAME" value="VALUE"><label for="ID"></label> </a>
                    <a class="dropdown-item" href="#">Ariana Grande <input type="radio" id="ID" name="NAME" value="VALUE"><label for="ID"></label> </a>
                    <a class="dropdown-item" href="#">Cherie Lum <input type="radio" id="ID" name="NAME" value="VALUE"><label for="ID"></label> </a>
                  </div>
          </div>
      </div>

的CSS


  .dropdown-container {
  职位：相对}
  
  .dropdown-menu {位置：绝对；最高：100％； /* 底部
  按钮/左边距：-100px; /更左侧* /}

最佳答案

这是你想要的。

使用的CSS是

.dropdown-container {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0px;
}

.dropdown-menu a {
  display: block;
}

.dropdown-container {
  position: relative;
  display: inline-block;
}

关于javascript - Bootstrap Button Drop Down在div上方弹出，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/46748024/