Tweak link style

default_app/index.html

@@ -46,13 +46,10 @@
       vertical-align: middle !important;
     }
 
-    a {
+    a,
-      color: #39AEC6;
-      text-decoration: none;
-    }
-
     a:hover {
-      text-decoration: underline;
+      color: #2ab0cb;
+      text-decoration: none;
     }
 
     pre, code {