Try the code given below to start a navigation design.
<!-- Start Navigation -->
<nav class="navbar navbar-inverse">
<div
class="container-fluid">
<div
class="navbar-header">
<button
type="button" class="navbar-toggle"
data-toggle="collapse" data-target="#myNavbar">
<span
class="icon-bar"></span>
<span
class="icon-bar"></span>
<span
class="icon-bar"></span>
</button>
<a
class="navbar-brand" href="#">WebSiteName</a>
</div>
<div
class="collapse navbar-collapse" id="myNavbar">
<ul
class="nav navbar-nav">
<li
class="active"><a
href="#">Home</a></li>
<li
class="dropdown">
<a
class="dropdown-toggle" data-toggle="dropdown"
href="#">Page 1 <span
class="caret"></span></a>
<ul
class="dropdown-menu">
<li><a
href="#">Page 1-1</a></li>
<li><a href="#">Page 1-2</a></li>
<li><a href="#">Page 1-3</a></li>
</ul>
</li>
<li><a href="#">Page 2</a></li>
<li><a href="#">Page 3</a></li>
</ul>
<ul
class="nav navbar-nav navbar-right">
<li><a href="#"><span class="glyphicon
glyphicon-user"></span> Sign Up</a></li>
<li><a href="#"><span class="glyphicon
glyphicon-log-in"></span> Login</a></li>
</ul>
</div>
</div>
</nav>
<!-- End Navigation -->
