Hide Invision

// ==UserScript==
// @name         Hide Invision
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  try to take over the world!
// @author       You
// @match        https://salesforce.invisionapp.com/*
// @grant        none
// ==/UserScript==

function addGlobalStyle(css) {
        var head, style;
        head = document.getElementsByTagName('head')[0];
        if (!head) { return; }
        style = document.createElement('style');
        style.type = 'text/css';
        style.innerHTML = css;
        head.appendChild(style);
}
addGlobalStyle('a.powered-by {display:none !important;}');
addGlobalStyle('div.tool {display:none !important;}');