I enjoyed thinking about this. A few thoughts on usability! The text on these sausage links makes the buttons quite visible and readable, but I find these join

I enjoyed thinking about this. A few thoughts on usability! The text on these sausage links makes the buttons quite visible and readable, but I find these joined buttons to be most helpful when one is always active and the options are mutually exclusive. For example, at the bottom the zoom buttons (1x, 0.5x, 0.25x) do this very well. One is always highlighted so it's very easy to understand the current state and to pick a different state. I'd argue this works less well in the top-left buttons (HTML, SCSS) because there is a hidden behavior that collapse and expands the sidebar. It's clever, but I didn't expect the bar to open, nor did I expect it to close when I tapped it a second time. It workes pretty well in this website preview example because html/css feels like good use of the side panel, but I'd argue most hamburger buttons hide much more rarely used views like logout, account and privacy settings, payment options, etc, so not sure the sausage links can replace all these, but an interesting thought experiment.