How to create a Dropdown Multi-Level menu using HTML?

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Good morning, I'm trying to create a multi-level dropdown menu by following the site template: link . However, the elements within the submenu do not appear. Here is the code: 

<html>
  <body>
    <nav class="navbar navbar-inverse navbar-fixed-top">
      <div class="container">
        <div class="navbar-header">
          <a class="navbar-brand" href="principal.php">Página Principal</a>
        </div>
        <div id="navbar" class="navbar-collapse collapse">
          <ul class="nav navbar-nav">
            <li class="dropdown-submenu">
              <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Teste<span class="caret"></span></a>
              <ul class="dropdown-menu">
                <li class="dropdown-submenu">
                  <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Teste 2<span class="caret"></span></a>
                  <ul class="dropdown-menu">
                    <li><a href="teste3.php">Teste 3</a></li>
                    <li><a href="teste4.php">Teste 4</a></li>
                  </ul>
                </li>
              </ul>
            </li>
          </ul>
        </div>
      </div>
   </nav>
</body>

    
asked by anonymous 14.08.2017 / 15:21

1 answer

1

Here is the example you mentioned working, do not forget to import the bootstrap js, and jquery besides css. 

.dropdown-submenu {
    position: relative;
}

.dropdown-submenu>.dropdown-menu {
    top: 0;
    left: 100%;
    margin-top: -6px;
    margin-left: -1px;
    -webkit-border-radius: 0 6px 6px 6px;
    -moz-border-radius: 0 6px 6px;
    border-radius: 0 6px 6px 6px;
}

.dropdown-submenu:hover>.dropdown-menu {
    display: block;
}

.dropdown-submenu>a:after {
    display: block;
    content: " ";
    float: right;
    width: 0;
    height: 0;
    border-color: transparent;
    border-style: solid;
    border-width: 5px 0 5px 5px;
    border-left-color: #ccc;
    margin-top: 5px;
    margin-right: -10px;
}

.dropdown-submenu:hover>a:after {
    border-left-color: #fff;
}

.dropdown-submenu.pull-left {
    float: none;
}

.dropdown-submenu.pull-left>.dropdown-menu {
    left: -100%;
    margin-left: 10px;
    -webkit-border-radius: 6px 0 6px 6px;
    -moz-border-radius: 6px 0 6px 6px;
    border-radius: 6px 0 6px 6px;
}
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"/>

<div class="container">
	<div class="row">
        <h2>Multi level dropdown menu in Bootstrap 3</h2>
        <hr>
        <div class="dropdown">
            <a id="dLabel" role="button" data-toggle="dropdown" class="btn btn-primary" data-target="#" href="#">
                Dropdown <span class="caret"></span>
            </a>
    		<ul class="dropdown-menu multi-level" role="menu" aria-labelledby="dropdownMenu">
              <li><a href="#">Some action</a></li>
              <li><a href="#">Some other action</a></li>
              <li class="divider"></li>
              <li class="dropdown-submenu">
                <a tabindex="-1" href="#">Hover me for more options</a>
                <ul class="dropdown-menu">
                  <li><a tabindex="-1" href="#">Second level</a></li>
                  <li class="dropdown-submenu">
                    <a href="#">Even More..</a>
                    <ul class="dropdown-menu">
                        <li><a href="#">3rd level</a></li>
                    	<li><a href="#">3rd level</a></li>
                    </ul>
                  </li>
                  <li><a href="#">Second level</a></li>
                  <li><a href="#">Second level</a></li>
                </ul>
              </li>
            </ul>
        </div>
	</div>
</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.min.js"></script><scriptsrc="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" ></script>
    
14.08.2017 / 18:55
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