I just uploaded my first WebGL game but the window is really small so you can only see a small portion of the center of the actual game view

Game in question: https://lower-third.itch.io/blackbox

HTML and CSS: https://github.com/mattiasaksli/Aqua/tree/master/WebGL

Like I said, it's my first time trying to use this stuff so I have no idea what I'm doing and didn't find any adequate answers online yet. I just want to make the window as big as possible and make sure it displays the entirety of the game view.

You can change the size of your game’s frame on itch.io on your game’s edit page. The auto-detection only works for unity games using the stock export template.

Thanks, that fixed it!