Issue 4514 - Font readability on acceptableads.com

static/scss/layout/_footer.scss

 // This file is part of acceptableads.org.
 // Copyright (C) 2016 Eyeo GmbH
 //
 // acceptableads.org is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.
 //
 // acceptableads.org is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.
 //
 // You should have received a copy of the GNU General Public License
 // along with acceptableads.org.  If not, see <http://www.gnu.org/licenses/>.
 
 #footer
 {
   padding-top: $lg;
   padding-bottom: $xl;
-  font-size: 70%;
+  font-size: $font-size-sm;
   background-color: $secondary-bg;
   color: $secondary-fg;
 
   @media (max-width: $tablet-breakpoint)
   {
     padding-top: $md;
     padding-bottom: $lg;
   }
 
   @media (max-width: $mobile-breakpoint)
@@ skipping 41 matching lines @@
   {
     text-decoration: underline;
     color: $accent !important;
   }
 
   p
   {
     color: $info;
   }
 }