so bootstrap4

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
<div class="foozle">
title
</div>
<div class="vavvbl">
menu
</div>

<div class="asfsadf">
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll content<br/>
scroll...

SCSS

#title {background-color: aqua;}
#menu {background-color: aquamarine;}
.content {background-color: orange;}

.foozle {
position: fixed; 
top: 0;
}

.vavvbl {
  position: fixed; 
  top: 20px;
}

.asfsadf {
  margin-top: 40px;
  height: calc(100vh - 40px);
  overflow: auto;
}