I was gonna comment and then realized comments didn’t support CSS crimes, so just in case it’s ever useful for someone:
<div style="transform: rotateX(180deg);">
<div style="transform: scale(-1, 1); text-align: right;">
your upside-down text
</div>
</div>
(disclamer: I’m no html expert so it’s most likely not optimal, and haven’t tested outside of Firefox either)
According to all known laws of aviation,
there is no way a bee should be able to fly.