Fix CSS issue with tags

Signed-off-by: Danila Fedorin <danila.fedorin@gmail.com>

layouts/blog/single.html

@@ -1,9 +1,9 @@
 {{ define "main" }}
 <h2>{{ .Title }}</h2>
 <div class="post-subscript">
-    <p>
+    <p class="tag-list">
         {{- range (.GetTerms "tags") -}}
-        <a class="button" href="{{ .Permalink }}">{{ .Title }}</a>
+        <a class="tag" href="{{ .Permalink }}">{{ .Title }}</a>
         {{ end -}}
     </p>
     <p>{{ i18n "postedOn" (.Date.Format "January 2, 2006") }}.</p>