Nav: Fix centering on mobile

Author: nicoburns

templates/nav.hbs

@@ -7,7 +7,7 @@
     <span class="pl4 db dn-l">{{!-- spacer --}}</span>
   </a>
 
-  <ul class="nav list w-100 w-auto-l flex flex-none flex-row flex-wrap justify-center justify-end-l items-center pv2 ph4-ns">
+  <ul class="nav list w-100 w-auto-l flex flex-none flex-row flex-wrap justify-center justify-end-l items-center pv2 ph4-ns pl0">
     <li class="flex-inline pv2 ph2 ph4-ns"><a href="/learn">Learn</a></li>
     <li class="flex-inline pv2 ph2 ph4-ns"><a href="/tools">Tools</a></li>
     <li class="flex-inline pv2 ph2 ph4-ns"><a href="/governance">Governance</a></li>