Wide github.com

tamper_wide_github.js

// ==UserScript==
// @name         Wide github.com
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  make github.com 100% wide
// @author       Ivaylo Novakov
// @match        https://github.com/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    let containers = document.getElementsByClassName('container-lg');
    for(let i=0; i < containers.length; i++) {
        containers[i].style.maxWidth = '100%';
    }

    let columns = document.getElementsByClassName('col-9');
    for(let i=0; i < columns.length; i++) {
        columns[i].style.width = '80%';
    }
})();