I have to say, though, I had a bit of a confused chuckle at the "marketing copy." This is (presumably) a hobby project, not a product landing page; the serious tone seems very out of place. "Sleek. Fast. Clean. Responsive. Line by line opcode explanation." sounds like something out of an Apple ad. Are you trying to sell me something here?
I liked it when programmer websites were butt-ugly text dumps and proud of it.
The demo with live opcode display in the editor is pretty cool!