Bootstrap导航点击切换器展开时如何将nav-items定位到右侧？

问题原因 #

你当前使用ms-auto不生效的核心原因是导航栏的外层容器container-fluid额外添加了justify-content-between类，这个类会让导航栏的三个直接子元素（品牌标识、折叠按钮、导航菜单容器）按两端对齐排布，导致导航菜单容器navbar-collapse没有占满剩余宽度，ms-auto的自动左margin没有生效的布局基础。
另外还存在两个不影响当前布局但需要修正的细节错误：

• 列表项的类名写错，应为nav-item而非navbar-item
• 折叠按钮的aria-controls属性值和导航容器的id不匹配，会导致移动端折叠功能异常
• 折叠按钮上额外加了多余的collapse类，会影响按钮默认样式

解决方案 #

按以下步骤修改代码即可实现导航项右对齐：

1. 移除container-fluid上的justify-content-between类
2. 你可以选择两种方式实现右对齐，选其中一种即可：
   • 方式一：保留ul上的ms-auto类（推荐，符合Bootstrap原生导航栏写法）
   • 方式二：给navbar-collapse添加justify-content-end类

修正后的完整代码 #

<html lang="en">
  <head>
    <!-- Required meta tags -->
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">

    <!-- Bootstrap CSS -->
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.1/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-F3w7mX95PdgyTmZZMECAngseQB83DfGTowi0iMjiWaeVhAn4FJkqJByhZMI3AhiU" crossorigin="anonymous">
    <link rel="stylesheet" href="style.css">
    <title>Portfolio</title>
  </head>
  <body>
    <header>
      <nav class="navbar navbar-expand-lg fixed-top navbar-light">
        <div class="container-fluid mx-5 px-4">
          <a class="navbar-brand" href="#">HELLO</a>
          <button
            class="navbar-toggler collapsed"
            type="button"
            data-bs-toggle="collapse"
            data-bs-target="#navbarCollapse"
            aria-controls="navbarCollapse"
            aria-expanded="false"
            aria-label="Toggle navigation">

            <span class="navbar-toggler-icon"></span>
          </button>

          <div class="navbar-collapse" id="navbarCollapse">
            <ul class="navbar-nav ms-auto">
              <li class="nav-item">
                <a class="nav-link active " aria-current="page" href="#">ABOUT</a>
              </li>
              <li class="nav-item">
                <a class="nav-link active" aria-current="page" href="#">PROJECT</a>
              </li>
              <li class="nav-item">
                <a class="nav-link active" aria-current="page" href="#">RESUME</a>
              </li>
              <li class="nav-item">
                <a class="nav-link active" aria-current="page" href="#">CONTACT</a>
              </li>
            </ul>
          </div>
        </div>

      </nav>
      <!-- <img class="img-fluid" src="img\heading-image.jpg" alt=""> -->
    </header>
    <!-- Optional JavaScript -->
    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.1/dist/js/bootstrap.bundle.min.js" integrity="sha384-/bQdsTh/da6pkI1MST/rWKFNjaCP5gBSY4sEBT38Q/9RBh9AH40zEOg7Hlq2THRZ" crossorigin="anonymous"></script>
    <script src="script.js"></script>
  </body>
</html>

内容的提问来源于stack exchange，提问作者mianuar