How can I incorporate a dropdown menu into my website's navigation using Bootstrap 4 alpha?

This content is based on the Bootstrap v4 Alpha blog theme. I integrated it into a project but encountered issues when trying to add a dropdown menu to the navigation bar. Despite my attempts, the dropdowns did not appear as expected.

I included the code snippet for the intended dropdown functionality below, which did not work properly within this context. Any suggestions or guidance on what might be causing this issue in relation to custom styles would be greatly appreciated.

<li class="dropdown">
   <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Dropdown <span class="caret"></span></a>
     <ul class="dropdown-menu">
        <li><a href="#">About</a></li>
        <li><a href="#">Team</a></li>
        <li class="dropdown-header">Nav header</li>
        <li><a href="#">Separated link</a></li>
        <li><a href="#">One more separated link</a></li>
     </ul>
</li>

/*
 * Custom Global Styles
 */
@media (min-width: 48em) {
  html {
    font-size: 18px;
  }
}

body {
  font-family: Georgia, "Times New Roman", Times, serif;
  color: #555;
}

h1, .h1,
h2, .h2,
h3, .h3,
h4, .h4,
h5, .h5,
h6, .h6 {
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-weight: normal;
  color: #333;
}
<!-- More CSS and styling omitted for conciseness -->

<html lang="en">
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
    <meta name="description" content="">
    <meta name="author" content="">
    <link rel="icon" href="../../favicon.ico">

    <title>Blog Template for Bootstrap</title>
    <link rel="canonical" href="https://getbootstrap.com/docs/4.0/examples/blog/">

    <!-- Bootstrap core CSS -->
    <link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" rel="stylesheet">

    <!-- Custom styles for this template -->
    <link href="blog.css" rel="stylesheet">
  </head>

  <body>

    <div class="blog-masthead">
      <div class="container">
        <nav class="nav blog-nav">
          <a class="nav-link active" href="#">Home</a>
          <a class="nav-link" href="#">New features</a>
          <a class="nav-link" href="#">Press</a>
          <a class="nav-link" href="#">New hires</a>
          <a class="nav-link" href="#">About</a>
        </nav>
      </div>
    </div>
      
    <div class="blog-header">
      <div class="container">
        <h1 class="blog-title">The Bootstrap Blog</h1>
        <p class="lead blog-description">An example blog template built with Bootstrap.</p>
      </div>
    </div>

    <div class="container">

      <div class="row">

        <div class="col-sm-8 blog-main">

Answer №1

If you want to see how a drop-down in Bootstrap 4 should appear, take a look at the code below (remember, this corresponds to the Bootstrap 4 release version; the alpha version is no longer in use):

<li class="nav-item dropdown">
    <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 class="dropdown-item" href="#">Action</>
        <a class="dropdown-item" href="#">Another action</a>
        <div class="dropdown-divider"></div>
        <a class="dropdown-item" href="#">Something else here</>
    </div>
</li>

Please note that your code is lacking the necessary dropdown-item classes.

Below is a comprehensive example of a navbar in Bootstrap 4, which includes a drop-down menu:

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXP">PG6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">

<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>

<nav class="navbar navbar-expand-lg navbar-light bg-light">
  <a class="navbar-brand" href="#">Navbar</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">
      <li class="nav-item active">
        <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">Link</a>
      </li>
      <li class="nav-item dropdown">
        <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 class="dropdown-item" href="#">Action</a>
          <a class="dropdown-item" href="#">Another action</a>
          <div class="dropdown-divider"></div>
          <a class="dropdown-item" href="#">Something else here</a>
        </div>
      </li>
      <li class="nav-item">
        <a class="nav-link disabled" href="#">Disabled</a>
      </li>
    </ul>
    <form class="form-inline my-2 my-lg-0">
      <input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
      <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
    </form>
  </div>
</nav>

For more information, visit:

https://getbootstrap.com/docs/4.0/components/navbar/

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