htmlcsstwitter-bootstrapbootswatch

My dropdown menu is not working


So I'm pretty new at HTMl/CSS and Bootstrap. I am currently trying to implement a dropdown menu on my website. I am using the code from my theme on Bootswatch here. When I click on the Dropdown menu, nothing happens. Does anyone know why it isn't working?

HTML:

    <!DOCTYPE html>
<html>
   <head>
      <meta charset="UTF-8"/>
      <meta name="viewport" content="width=device-width, initial-scale=1">
      <title>Website Stefan</title>
      <link rel="stylesheet" href="css/bootstrap.min.css">
      <link href="main.css" type="text/css" rel="stylesheet"/>
      <script type="text/javascript" src="http://cdn.saldev.nl/js/jquery/jquery-3.1.1.min.js"></script>
      <script type="text/javascript" src="klassenlijst.js"></script> 
      <script type="text/javascript" src="hamburger.js"></script>
   </head>
   <body>
     <nav class="navbar navbar-expand-lg navbar-dark bg-primary">
  <a class="navbar-brand" href="#">Stefan Stromberg</a>
  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarColor01" aria-controls="navbarColor01" aria-expanded="false" aria-label="Toggle navigation">
    <span class="navbar-toggler-icon"></span>
  </button>
  <div class="collapse navbar-collapse" id="navbarColor01">
    <ul class="navbar-nav mr-auto">
      <li class="nav-item">
        <a class="nav-link" href="index.html">Home</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="opleiding.html">CV</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">Portfolio</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">Overig</a>
      </li>
      <li class="nav-item dropdown">
    <a class="nav-link dropdown-toggle" data-toggle="dropdown" href="#" role="button" aria-haspopup="true" aria-expanded="false">Dropdown</a>
    <div class="dropdown-menu" x-placement="bottom-start" style="position: absolute; will-change: transform; top: 0px; left: 0px; transform: translate3d(0px, 40px, 0px);">
      <a class="dropdown-item" href="#">Action</a>
      <a class="dropdown-item" href="#">Another action</a>
      <a class="dropdown-item" href="#">Something else here</a>
      <div class="dropdown-divider"></div>
      <a class="dropdown-item" href="#">Separated link</a>
    </div>
  </li>
    </ul>
    </div>
</nav>
    <div class="jumbotron">
  <h1 class="display-3">...</h1>
  <p class="lead">Mijn naam is ... Hierbij presenteer ik mijn website en andere projecten!</p>
  <hr class="my-4">
  <p>Bovenin het menu kunt u mijn CV en Portfolio zien. Neem gerust een kijkje!</p>
</div>
   </body>
</html>

I'm not doing anything in CSS that could cause this issue as far as I'm aware. But here's that code for if you need it.

.jumbotron {
    background-color: whitesmoke;
    height: 100%; 
}

html, body {
    height: 100%;
}

.display-3 {
    color: black;
    font-family: inherit;
}
.lead {
    color: black;
    font-family: inherit;
}

p {
    color: black;
    font-family: inherit;
}

body {
    height: 100%;
    background-color: whitesmoke;
}

.display-5 {
    color: black;
    font-family: inherit;
}

li {
    color: black;
    font-family: inherit;
}

Solution

  • Include jquery and bootstrap javascript libraries.

    .jumbotron {
        background-color: whitesmoke;
        height: 100%; 
    }
    
    html, body {
        height: 100%;
    }
    
    .display-3 {
        color: black;
        font-family: inherit;
    }
    .lead {
        color: black;
        font-family: inherit;
    }
    
    p {
        color: black;
        font-family: inherit;
    }
    
    body {
        height: 100%;
        background-color: whitesmoke;
    }
    
    .display-5 {
        color: black;
        font-family: inherit;
    }
    
    li {
        color: black;
        font-family: inherit;
    }
    <!DOCTYPE html>
    <html>
       <head>
          <meta charset="UTF-8"/>
          <meta name="viewport" content="width=device-width, initial-scale=1">
          <title>Website Stefan</title>  
          <link href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css" rel="stylesheet"/>
          <link href="main.css" type="text/css" rel="stylesheet"/>
          <script type="text/javascript" src="http://cdn.saldev.nl/js/jquery/jquery-3.1.1.min.js"></script>
          <script type="text/javascript" src="klassenlijst.js"></script> 
          <script type="text/javascript" src="hamburger.js"></script>
          <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
          <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/js/bootstrap.min.js"></script>
       </head>
       <body>
         <nav class="navbar navbar-expand-lg navbar-dark bg-primary">
      <a class="navbar-brand" href="#">Stefan Stromberg</a>
      <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarColor01" aria-controls="navbarColor01" aria-expanded="false" aria-label="Toggle navigation">
        <span class="navbar-toggler-icon"></span>
      </button>
      <div class="collapse navbar-collapse" id="navbarColor01">
        <ul class="navbar-nav mr-auto">
          <li class="nav-item">
            <a class="nav-link" href="index.html">Home</a>
          </li>
          <li class="nav-item">
            <a class="nav-link" href="opleiding.html">CV</a>
          </li>
          <li class="nav-item">
            <a class="nav-link" href="#">Portfolio</a>
          </li>
          <li class="nav-item">
            <a class="nav-link" href="#">Overig</a>
          </li>
          <li class="nav-item dropdown">
        <a class="nav-link dropdown-toggle" data-toggle="dropdown" href="#" role="button" aria-haspopup="true" aria-expanded="false">Dropdown</a>
        <div class="dropdown-menu" x-placement="bottom-start" style="position: absolute; will-change: transform; top: 0px; left: 0px; transform: translate3d(0px, 40px, 0px);">
          <a class="dropdown-item" href="#">Action</a>
          <a class="dropdown-item" href="#">Another action</a>
          <a class="dropdown-item" href="#">Something else here</a>
          <div class="dropdown-divider"></div>
          <a class="dropdown-item" href="#">Separated link</a>
        </div>
      </li>
        </ul>
        </div>
    </nav>
        <div class="jumbotron">
      <h1 class="display-3">...</h1>
      <p class="lead">Mijn naam is ... Hierbij presenteer ik mijn website en andere projecten!</p>
      <hr class="my-4">
      <p>Bovenin het menu kunt u mijn CV en Portfolio zien. Neem gerust een kijkje!</p>
    </div>
       </body>
    </html>