Error pages: minor css change

anonstream/templates/error.html

@@ -9,7 +9,7 @@
       color: #ddd;
       font-family: sans-serif;
       font-size: 14pt;
-      margin: 4pt 6pt;
+      margin: 3pt 6pt;
       text-align: center;
       text-shadow: 2px 0px 1px orangered;
     }