Can’t wait to hardcode styling for each individual display that is out there! go latex! Make everyone miserable, not just the math people.
LaTeX can output to fluid-format document types (e.g., ePub), and there are tools that will convert between numerous output formats (pandoc). Even if you're looking at mobile displays, there's a finite set, and those can either be punted or targeted precisely at the 4", 5", 6", 8", and 10" device sizes which are most common. Using an e-ink device, I'd really prefer more Web content were paginated. I tend to rely on t…
If your standard is to just throw information with random formatting on a screen that ultimately cannot be read, then yes latex can do that for you.
But if that is your goal, pure html suffices.