如何在 bootstrap + angular 中对齐下拉菜单？ [复制]

Question

你能告诉我如何在 bootstrap + angular 中对齐下拉菜单吗？

这是我的代码 https://stackblitz.com/edit/angular-4risp3?file=src%2Fapp%2Fapp.component.html

<nav class="navbar navbar-expand-lg navbar-light bg-light">
  <a class="navbar-brand" href="#">Recipe Book</a>
  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent"
          aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
    <span class="navbar-toggler-icon"></span>
  </button>

  <div class="collapse navbar-collapse " id="navbarSupportedContent">
    <ul class="navbar-nav mr-auto header_nav">
      <li class="nav-item ">
        <a class="nav-link" href="#">Recipes </a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">Shopping List</a>
      </li>
      <li class="nav-item dropdown float-right">
        <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown"
           aria-haspopup="true" aria-expanded="false">
          Dropdown
        </a>
        <div class="dropdown-menu" aria-labelledby="navbarDropdown">
          <a href="#">Save Data</a>
          <a href="#">Fetch Data</a>
        </div>
      </li>
    </ul>
  </div>
</nav>

Answer 1

试试这个

.float-right {
padding: 0;
float: right;
position: relative;
    }

Answer 2

从当前的 ul 中移除下拉列表 li，并在 ul 之后添加另一个 ul，如下所示：

<ul class="navbar-nav mr-right header_nav">
   <li class="nav-item dropdown my-2 my-lg-0">
      <a aria-expanded="false" aria-haspopup="true" class="nav-link dropdown-toggle" data-toggle="dropdown" href="#" id="navbarDropdown" role="button"> Dropdown </a>
      <div aria-labelledby="navbarDropdown" class="dropdown-menu"><a href="#">Save Data</a><a href="#">Fetch Data</a></div>
   </li>
</ul>

我在 chrome 开发人员工具中进行了更改，因此请删除复制时出现的额外项目... >

<ul class="navbar-nav mr-right header_nav">