This is a some idea for you , think a minuet you can do it
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/css/bootstrap.min.css" integrity="sha384-/Y6pD6FV/Vv2HJnA6t+vslU6fwYXjCFtcEpHbNJ0lyAFsXTsjBbfaDjzALeQsN6M" crossorigin="anonymous">
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.11.0/umd/popper.min.js" integrity="sha384-b/U6ypiBEHpOf/4+1nzFpr53nxSS+GLCkfwBdFNTxtclqqenISfwAzpKaMNFNmj4" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/js/bootstrap.min.js" integrity="sha384-h0AbiXch4ZDo7tp9hKZ4TsHbi047NrKGLO3SEJAg45jXxnGIfYzk4Si90RDIqNm1" crossorigin="anonymous"></script>
<body>
<nav class="navbar navbar-expand-md navbar-dark fixed-top bg-dark">
<a class="navbar-brand" href="#">Dashboard</a>
<button class="navbar-toggler d-lg-none" type="button" data-toggle="collapse" data-target="#navbarsExampleDefault" aria-controls="navbarsExampleDefault" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarsExampleDefault">
<ul class="navbar-nav mr-auto">
<li class="nav-item active">
<a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Settings</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Profile</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Help</a>
</li>
</ul>
<form class="form-inline mt-2 mt-md-0">
<input class="form-control mr-sm-2" type="text" placeholder="Search" aria-label="Search">
<button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
</form>
</div>
</nav>
<div class="container-fluid">
<div class="row">
<nav class="col-sm-3 col-md-2 d-none d-sm-block bg-light sidebar">
<ul class="nav nav-pills flex-column">
<li class="nav-item">
<a class="nav-link active" href="#">Overview <span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Reports</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Analytics</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Export</a>
</li>
</ul>
<ul class="nav nav-pills flex-column">
<li class="nav-item">
<a class="nav-link" href="#">Nav item</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Nav item again</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">One more nav</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Another nav item</a>
</li>
</ul>
<ul class="nav nav-pills flex-column">
<li class="nav-item">
<a class="nav-link" href="#">Nav item again</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">One more nav</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Another nav item</a>
</li>
</ul>
</nav>
</div>
</div>
</body>
and look flowing example https://getbootstrap.com/docs/4.0/examples/
learn bootstrap you can make it very easy
https://getbootstrap.com/
solved Create a sticky header and sticky sidebar? [closed]