customize css with Tempermonkey

Tempermonkey_CSS.js

// ==UserScript==
// @name         LinkedIn Improve
// @namespace    http://tampermonkey.net/
// @version      2024-02-28
// @description  try to take over the world!
// @author       You
// @match        https://www.linkedin.com/messaging/thread/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=linkedin.com
// @grant        GM_addStyle
// ==/UserScript==

GM_addStyle(`

.scaffold-layout__aside {
  display: none;
}

#main {
  min-width: 1400px;
}

`);

(function() {
    'use strict';
    // Your code here...
})();