Hey Austin,
So it seems like a lot of the UI issues are because you're designing the game around mobile, which means everything gets stretched to a huge size on PC
You should look into
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, it's a simple CSS rule that lets you apply styles only when certain conditions are met, such as the size of the browser window. You could keep all your existing styles for mobile, and simply set a few rules for desktop such as a max width for images and a few other elements so that they don't scale too big