Выподающее меню на pdoMenu

<!-- Dropdown Structure -->
<ul id="dropdown1" class="dropdown-content">
  <li><a href="#!">one</a></li>
  <li><a href="#!">two</a></li>
  <li class="divider"></li>
  <li><a href="#!">three</a></li>
</ul>
<nav class="indigo darken-4">
    <div class="container">
        <div class="nav-wrapper">
          <a href="#!" class="brand-logo center">Logo</a>
          <a href="#" data-activates="mobile-demo" class="button-collapse"><i class="material-icons">menu</i></a>
          <ul class="left hide-on-med-and-down">
              <li><a href="sass.html">Sass</a></li>
              <li><a href="badges.html">Components</a></li>
              <!-- Dropdown Trigger -->
              <li><a class="dropdown-button" href="#!" data-activates="dropdown1">Dropdown<i class="material-icons right">arrow_drop_down</i></a></li>
            </ul>
          <ul class="side-nav" id="mobile-demo">
            <li><a href="sass.html">Sass</a></li>
            <li><a href="badges.html">Components</a></li>
            <li><a href="collapsible.html">Javascript</a></li>
            <li><a href="mobile.html">Mobile</a></li>
          </ul>
        </div>
    </div>
  </nav>