Tampermonkey: GitHub Comic Sans

gistfile1.txt

// ==UserScript==
// @name         GitHub Comic Sans MS
// @namespace    http://tampermonkey.net/
// @version      0.0
// @description  Swithc font to Comic Sans MS
// @author       You
// @match        https://*.github.com/*
// @icon         https://www.google.com/s2/favicons?domain=github.com
// @grant        none
// ==/UserScript==

(function() {
    var css = `
        :not(span) {
            font-family: comic sans ms;
        };
    `;

    var styleSheet = document.createElement("style");
    styleSheet.type = "text/css";
    styleSheet.innerText = css;
    document.head.appendChild(styleSheet);
})();