What's the proper way to center a navigation menu in Bootstrap 4 with no brand and no search so that all of the links are evenly spaced but with the usual left-margin flush once it opens under the hamburger?

Also, I'm not sure if the "sr-only" and (current) are even needed.

Thank you!

Here's the code I have:

<!-- Begin Navbar -->
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>

<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav mr-auto">
<li class="nav-item">
<a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Overview</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Products</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Documentation & Videos</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Testimonials</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Software Partners</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Contact/About Us</a>
</li>
</ul>
</div>
</nav>
<!-- End Navbar -->