StackOverflow: Content First

so_content_first.user.js

// ==UserScript==
// @name         StackOverflow: Content First
// @description  remove unused html elements on stackoverflow.
// @namespace    https://gist.github.com/anovsiradj
// @version      2018.06.29
// @author       Mayendra Costanov (anovsiradj)
// @include      *://stackoverflow.com/questions/*
// @run-at       document-end
// @grant        none
// ==/UserScript==

(function() {
  'use strict';

  $(document.scripts).each(function() {
	if(this.src.indexOf('jquery') >= 0) return;
	this.remove();
  });

  // head
  $(document.head).children().each(function() {
	if(/META|NOSCRIPT/.test(this.tagName)) this.remove();
	if(this.tagName === 'LINK' && this.rel !== 'stylesheet') this.remove();
  });

  $(document.body).children('header,footer,script,noscript.iframe').remove();

  // body.(unused element)
  $('.everyonelovesstackoverflow', document.body).remove();

  $('#custom-header,#left-sidebar,#notify-container,#hireme', document.body).remove();

  // remove unused element on header
  $('#question-header').each(function() {
	$('div', this).remove();
  });

  $('#sidebar').each(function() {
	$('#chat-feature', this).remove();
  });

  $('#mainbar').each(function() {
	$('.votecell', this).find('input, .vote-up-off, .vote-down-off, .star-off').remove();
	$('.user-gravatar32', this).remove();
	$('#answers', this).each(function() {
	  $('.bottom-notice', this).remove();
	});

	$(this).parent().appendTo(document.body).prevAll().remove();
  });

  $('#post-form').remove();

  document.body.style['padding-top'] = '0px';
})();