<link href="//netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//netdna.bootstrapcdn.com/bootstrap/3.0.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<!------ Include the above in your HEAD tag ---------->
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>HTML</title>
<link rel="stylesheet" href="style.css"/>
</head>
<body>
<div class="wrapper">
<nav>
<div class="logo">
<h1>LOGO</h1>
</div>
<div class="menu">
<ul>
<li class="active"><a href="#">Home</a></li>
<li><a href="#">About Us</a></li>
<li><a href="#">Product</a></li>
<li class="submenu"><a href="#" class="arrow">Services</a>
<ul class="dropdown">
<li><a href="#">Services1</a></li>
<li><a href="#">Services2</a></li>
<li><a href="#">Services3</a></li>
<li><a href="#">Services4</a></li>
</ul>
</li>
<li><a href="#">Contact Us</a></li>
</ul>
</div>
</nav>
<div class="slider"></div>
<section class="about">
<h1>About Us</h1>
<div class="about_para">
<p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged.</p>
<a href="#">Read More</a>
</div>
<div class="about_img">
<img src="http://i.imgur.com/u6NNIP6.jpg" alt="About" title="web design"/>
</div>
</section>
</div>
</body>
</html>