bootstrap navbar with logo centered above
<nav class="navbar navbar-expand-lg navbar-light" style="background-color: #18d2f8;">
<a class="navbar-brand" href="#"><img src="https://codingyaar.com/wp-content/uploads/logo.png"></a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#myNavbarToggler13"
aria-controls="myNavbarToggler13" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="myNavbarToggler13">
<ul class="navbar-nav mx-auto">
<li class="nav-item">
<a class="nav-link" href="#">Home</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">About</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Services</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Contact</a>
</li>
</ul>
</div>
</nav>