I broke the landing page's background in D6003 by adding a CSS selector that applied globally to `html` and `body`.
Turns out doing it right is a bit harder. In order to avoid needing dynamic imports, I needed to stop relying on `html` and `body` for styling, as they appear above `#react-root`. To make that happen, I had to move the background styling to inner divs, which required moving some CSS attributes around to get everything to look right.