improve style and base layout

layouts/_partials/term-link.html

@@ -7,6 +7,7 @@
 {{ $b := printf "0x%s" (substr $hash 4 2) | int }}
 {{ $rgba := printf "rgba(%d,%d,%d,0.2)" $r $g $b }}
 <a 
+    class="term-link"
     id="{{ $taxonomy | urlize }}_{{ $name | urlize }}" 
     style="background:rgba({{ $r }},{{ $g }},{{ $b }},0.4)" 
     href="{{ "/" | relLangURL}}{{ $taxonomy | urlize }}{{ "/" | relLangURL}}{{ $name | urlize }}">