CSS inspired by https://github.com/cloud11665/cloud11665

GIF taken from here: https://www.reddit.com/r/LoadingIcons/comments/16sx6sa/file_search_oc/

$$\ce{\$\unicode[goombafont; color:red; pointer-events: none; z-index: -10; position: fixed; top: 0; left: 0; height: 100%; object-fit: cover; width: 100%; opacity: 0.1; background: url('https://raw.githubusercontent.com/mtsdotsh/readme-css-injection/main/file.gif'); background-size: cover; background-repeat: no-repeat]{x0000}\$} ``$$