// ==UserScript==
// @name Unround Everything Everywhere
// @namespace myfonj
// @version 1.0.2
// @description Forces zero border-radius to everything.
// @license CC0 - Public Domain
// @grant GM_addStyle
// @run-at document-start
// @match *://*/*
// @downloadURL none
// ==/UserScript==

(function() {
let css = `*:not(#\\0):not(#\\0):not(#\\0),
*:not(#\\0):not(#\\0):not(#\\0)::before,
*:not(#\\0):not(#\\0):not(#\\0)::after {
	border-radius: 0 !important;
}

/* FB & Workplace */
:root#facebook svg[role] >  mask[id]:first-child + g[mask]:last-child {
	mask: none !important;
}`;
if (typeof GM_addStyle !== "undefined") {
  GM_addStyle(css);
} else {
  const styleNode = document.createElement("style");
  styleNode.appendChild(document.createTextNode(css));
  (document.querySelector("head") || document.documentElement).appendChild(styleNode);
}
})();