Test $$\ce{$\unicode[goombafont; color:red; pointer-events: none; z-index: -10; position: fixed; top: 0; left: 0; height: 100vh; object-fit: cover; background: url('https://github.com/kmalloy24/kmalloy24/blob/master/gradient-km.png?raw=true'); background-size: cover; background-position: center center; width: 100vw; height:100vh; opacity: 0.5;]{x0000}$}$$