<nav><!-- << Could just as easily be a div -->
<a href="#">Link 1</a><!-- << Comments are because inline-block will take in spaces and affect your margins
--><a href="#">Link 2</a><!--
--><a href="#">Longer Link 1</a><!--
--><a href="#">Link 3</a><!--
--><a href="#">Longer Link 2</a>
</nav>