issue 2377 - Finish design of Advanced tab of new options page

skin/options.css

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2016 Eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 282 matching lines @@
 #tab-share[hidden] + li
 {
   border-top: none;
 }
 
 #content
 {
   background-color: #FFFFFF;
   border: 1px solid #CDCDCD;
   border-radius: 8px;
-  box-sizing: border-box;
-  min-width: 960px;
+  width: 840px;
   padding: 0px 60px 40px 60px;
 }
 
 #content h1
 {
   border-bottom: 1px solid #CDCDCD;
   margin: 0px 0px 24px 0px;
   padding: 40px 0px 16px 0px;
 }
 
@@ skipping 1011 matching lines @@
 #other-language .button-add::before
 {
   display: none;
 }
 
 #other-language .display
 {
   -webkit-margin-start: 10px;
   -moz-margin-start: 10px;
 }