Fix mobile menu display so it shows on mid-size displays

Fixes #334

themes/gohugoioTheme/layouts/partials/site-footer.html

@@ -1,7 +1,7 @@
 <footer class="bg-primary-color-dark ph4-ns pt4 relative w-100" role="contentinfo">
     <div class="center flex-ns flex-wrap justify-between mw9 w-90">
       <div class="pb3 pt4 w-100 w-50-ns">
-      
+
          <div class="b f3  light-gray mb3 nested-links tc">
            By the <a href="https://github.com/gohugoio/hugo/contributors" class="link">Hugo Authors</a><br />
           </div>
@@ -41,8 +41,8 @@
 
     <img src="/images/gopher-side_color.svg" class="absolute-l bottom-0 dn db-l h4 right-0 z-999"/>
 
-    <div class="bg-primary-color-dark bottom-0 dn-ns fixed pb3 ph3 w-100"> 
-      {{ partial "nav-mobile.html" . }}
+    <div class="bg-primary-color-dark bottom-0 left-0 right-0 dn-l fixed pb3 ph3 w-100">
+      {{- partial "nav-mobile.html" . -}}
     </div>
 
 </footer>