From the docs:
Stop thinking in standard CSS units like px, em, rem, %
Start thinking in Character Cells for spacing, sizing, and positioning
A VT102 already has a character grid, but it needs a serial protocol to allow applications on the mainframe to talk to it. You can loop around this and use the raw mode to address individual cells.The web browser has an insanely powerful typographic and layout engine. Now we're looping back into character cells. Something went wrong here, at least once.
That said, I like the aesthetic and the default color palette. It's quirky, but it has its places.