make a nav bar flex code example
Example: responsive flexbox navbar
<nav>
<ul class="menu">
<li class="logo"><a href="#">Grid Header</a></li>
<li class="item"><a href="#">Venstre</a></li>
</li>
<li class="toggle"><a href="#"><i class="fa fa-bars" id="bars"></i></a></li>
</ul>
</nav>