debug.css.html

<a href='javascript:/* debug.css | MIT License | zaydek.github.com/debug.css */ if (!("is_debugging" in window)) { is_debugging = false; var debug_el = document.createElement("style"); debug_el.append(document.createTextNode(`*:not(path):not(g) { color: hsla(210, 100%, 100%, 0.9) !important; background: hsla(210, 100%,  50%, 0.5) !important; outline: solid 0.25rem hsla(210, 100%, 100%, 0.5) !important; box-shadow: none !important; filter: none !important; }`)); } function enable_debugger() { if (!is_debugging) { document.head.appendChild(debug_el); is_debugging = true; } } function disable_debugger() { if (is_debugging) { document.head.removeChild(debug_el); is_debugging = false; } } !is_debugging ? enable_debugger() : disable_debugger();'>Drag this (the text) to the bookmarks bar, it's embedded JavaScript. And or just click it to see what happens</a>