Ran into some issues with my attempt to use LessCss in order to create the animated border you see around the navigation bar and game. I found out that according to the same-origin policy ES6 modules are subjected to limitations that would require me to run my script on a local server.
Decided to figure out a way to use regular CSS to create the animated border I wanted. Converted the code I was using in LessCss into regular CSS and applied the keyframes rule to animate gradient.
Code available: github.com/Kealiwyn