<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<nav class="navbar border navbar-expand-sm fixed-top bg-primary navbar-dark ">
<div class="container">
<a class="navbar-brand" href="#">
<img src="#" alt="Secure-Assurance.com" style="width:120px;">
</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#collapsibleNavbar">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="collapsibleNavbar">
<ul class="navbar-nav ml-auto">
<li class="nav-item active">
<a class="nav-link" href="#banner">Home</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#aboutus">About Us</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#services">Services</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#team">Team</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#contactus">ContactUs</a>
</li>
</ul>
</div>
</div>
