HTML

<nav class="navbar navbar-default bootsnav">
    <div class="container">      
        <!-- Start Header Navigation -->
        <div class="navbar-header">
            <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#navbar-menu">
                <i class="fa fa-bars"></i>
            </button>
            <a class="navbar-brand" href="#brand"><img src="LOGO_ADDRESS" class="logo" alt=""></a>
        </div>
        <!-- End Header Navigation -->

        <!-- Collect the nav links, forms, and other content for toggling -->
        <div class="collapse navbar-collapse" id="navbar-menu">
            <ul class="nav navbar-nav navbar-right" data-in="fadeInDown" data-out="fadeOutUp">
                <li><a href="#">Home</a></li>                    
                <li><a href="#">About Us</a></li>
                <li><a href="#">Services</a></li>
                
<li class="dropdown"> <a href="#" class="dropdown-toggle" data-toggle="dropdown" >Dropdown</a> <ul class="dropdown-menu"> <li><a href="#">Custom Menu</a></li> <li><a href="#">Custom Menu</a></li> <li class="dropdown"> <a href="#" class="dropdown-toggle" data-toggle="dropdown" >Sub Menu</a> <ul class="dropdown-menu"> <li><a href="#">Custom Menu</a></li> <li><a href="#">Custom Menu</a></li> <li class="dropdown"> <a href="#" class="dropdown-toggle" data-toggle="dropdown" >Sub Menu</a> <ul class="dropdown-menu"> <li><a href="#">Custom Menu</a></li> <li><a href="#">Custom Menu</a></li> <li><a href="#">Custom Menu</a></li> <li><a href="#">Custom Menu</a></li> </ul> </li> <li><a href="#">Custom Menu</a></li> </ul> </li> <li><a href="#">Custom Menu</a></li> </ul> </li>
<li><a href="#">Portfolio</a></li> <li><a href="#">Contact Us</a></li> </ul> </div><!-- /.navbar-collapse --> </div> </nav>
Animate Dropdown

Change animate dropdown with CSS3 animation from animated daneden


<ul class="nav navbar-nav navbar-right" data-in="fadeInDown" data-out="fadeOutUp">