I want to reduce the size of padding-top for the content area of the Stack Overflow website - using some custom CSS code applied using Tampermonkey. 
The element I'm talking about is called div#content and currently padding-top is set to 24px. I want to reduce just this padding, but keeping the others the same. 
Here is a minimal template using Tampermonkey:
// ==UserScript==
// @name        stackoverflow_reducepaddingtop
// @match       *://stackoverflow.com/*
// @grant       GM_addStyle
// @run-at      document-start
// ==/UserScript==
GM_addStyle ( ` ` );
 
    