我一直在尝试在我的页面上显示一个下拉菜单，但它不起作用。。。

我的HTML代码:

<div class="dropdown d-inline">
  <div class="widget-header  mr-3">
    <button href="#" class="icon icon-sm rounded-circle border" data-toggle="dropdown"><i class="fa fa-shopping-cart"></i></button>
      <span class="badge badge-pill badge-danger notify">{{ Cart::count() }}</span>
  </div>
  <div class="dropdown-menu p-3 dropdown-menu-right" style="min-width:280px;">
    <figure class="itemside mb-3">
      <div class="aside">
        <img src="bootstrap-ecommerce-html/images/items/1.jpg" class="img-sm border">
      </div>
      <figcaption class="info align-self-center">
        <p class="title">Name of item nice iteme</p>
        <a href="#" class="float-right"><i class="fa fa-trash"></i></a>
        <div class="price">$250</div> <!-- price-wrap.// -->
      </figcaption>
    </figure>
    <figure class="itemside mb-3">
      <div class="aside">
        <img src="bootstrap-ecommerce-html/images/items/2.jpg" class="img-sm border">
      </div>
      <figcaption class="info align-self-center">
        <p class="title">Some other item name is here</p>
        <a href="#" class="float-right"><i class="fa fa-trash"></i></a>
        <div class="price">$250</div> <!-- price-wrap.// -->
      </figcaption>
    </figure>
    <figure class="itemside mb-3">
      <div class="aside">
        <img src="bootstrap-ecommerce-html/images/items/3.jpg" class="img-sm border">
      </div>
      <figcaption class="info align-self-center">
        <p class="title">Another name of item  item</p>
        <a href="#" class="float-right"><i class="fa fa-trash"></i></a>
        <div class="price">$250</div> <!-- price-wrap.// -->
      </figcaption>
    </figure>
    <div class="price-wrap text-center py-3 border-top">
      Subtotal: <strong class="h5 price">$1200</strong>
    </div>
    <a href="" class="btn btn-primary btn-block"> Checkout </a>
  </div> <!-- drowpdown-menu.// -->
</div>

我的引导程序集成:

<script src="https://code.jquery.com/jquery-3.5.1.slim.min.js" integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js" integrity="sha384-Q6E9RHvbIyZFJoft+2mJbHaEWldlvI9IOYy5n3zV9zzTtmI3UksdQRVvoxMfooAo" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/js/bootstrap.min.js" integrity="sha384-OgVRvuATP1z7JjHLkuOU7Xw704+h835Lr+6QL9UvYjZE3Ipu6Tp75j7Bh/kR0JKI" crossorigin="anonymous"></script>

它是一个运行在Laravel上的。blade.php页面。 谢谢你提前帮忙，我真的卡住了。