Refactored .exturl class & improve variables for a tags. [2]

Author: ivan-nginx

source/css/_common/components/post/post.styl

@@ -5,6 +5,13 @@
   }
 }
 
+.post-body span.exturl {
+  .fa {
+    font-size: 14px;
+    margin-left: 4px;
+  }
+}
+
 .post-body .fancybox img {
   display: block !important;
   margin: 0 auto;