Issue 5542: Implement tooltips for new options page

skin/desktop-options.css

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-present 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 642 matching lines @@
   #sidebar .fixed
   {
     position: fixed;
   }
 
   #sidebar footer
   {
     bottom: 0px;
     position: absolute;
   }
-
 }
 
 /*
   Main content
  */
 
 body[data-tab|="general"] #content-general,
 body[data-tab|="advanced"] #content-advanced,
 body[data-tab|="whitelist"] #content-whitelist,
 body[data-tab|="help"] #content-help
@@ skipping 377 matching lines @@
 
 .tooltip
 {
   position: relative;
   margin: 0rem;
   -moz-margin-end: 1rem;
   -webkit-margin-end: 1rem;
   line-height: 1.5rem;
   text-decoration: none;
   cursor: help;
+  /* reset minimal button style */
+  color: inherit;
+  font: inherit;
+  text-transform: initial;
+  text-align: initial;
+  font-weight: initial;
+  font-size: initial;
 }
 
 /* 
   Used for translatable screen reader only content.
   e.g.: Use instead of aria-label to avoid complex attribute value translation
 */
 .sr-only
 {
   position: absolute;
   overflow: hidden;
@@ skipping 456 matching lines @@
   font-size: 1rem;
   color: #077CA6;
   background-color: #E1F2FA;
 }
 
 #notification strong
 {
   flex: 1;
   text-align: center;
 }