Nice formatting of TXT files

format_txt_files.js

// ==UserScript==
// @name         Nice formatting of TXT files
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Format online text files in a clean and easy to read way without losing fixed width needs.
// @author       Ricky Curtice
// @match        *://*/*.txt
// @grant        none
// ==/UserScript==

(function() {
	'use strict';

	// Your code here...
	let el = document.querySelector("body > pre");
	if (el) {
		el.style.fontSize = "14pt";
		el.style.marginLeft = "auto";
		el.style.marginRight = "auto";
		el.style.width = "44em";
	}
})();