index bootstrap
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1,shrink-to-fit=no">
<link href="css/bootstrap.min.css" rel="stylesheet">
<link href="css/main.css" rel="stylesheet">
<title>w3school</title>
</head>
<body>
<div class="container">
<div class="row">
<div class="col"></div>
</div>
<div class="row">
<div class="col"></div>
</div>
<div class="row">
<div class="col-3"></div>
<div class="col-6"></div>
<div class="col-3"></div>
</div>
<div class="row">
<div class="col"></div>
</div>
</div>
<div class="row">
<div class="col">
<div class="bg-logo">
<img src="img/logo.png">
</div>
</div>
</div>
<div class="row">
<div class="col">
<div id="main-nav">
<ul>
<li><a href="#">HTML/CSS</a></li>
<li><a href="#">JavaScript</a></li>
<li><a href="#">Server Side</a></li>
<li><a href="#">ASP.NET</a></li>
<li><a href="#">XML</a></li>
<li><a href="#">Web Services</a></li>
<li><a href="#">Web Building</a></li>
</ul>
</div>
</div>
</div>
<div class="col-4 col-md-8">
<div id="leftside"></div>
</div>
</body>
</html>
