Omg, incorporating the arrows into the icons is so obvious I can't believe I didn't think of it at all 💀 Thank you!
Godot on web has been a little tricky. For LD51 I just couldn't do it, then for LD52 I figured it out as I went along and had to spend a bunch of time on it, and now finally for LD53 I basically knew what I needed to do (and not do) and it went smoothly. I wrote down what I found out last time in a reply to this post which also has some other info.
Someone got a macOS build to work for me on the M2 for another game yesterday, so I hope they'll get back to me on how they did it, and I can pass it on to you.