Web Fusée Launcher: CSS Edition

Fusée Launcher ported to JavaScript using WebUSB. I also threw some CSS in there to make it look a teensy bit better.

Ported from fusee-launcher. Original project: web-fusee-launcher by atlas44 Thanks to ktemkin and ReSwitched for Fusée Gelée and a ton of other things!

Put the Switch in RCM, and connect it to your device.
Select either the example payload, or upload one.
Press 'Do the thing!'
On the consent screen that appears, select 'APX' and hit confirm.
If all goes well, the payload will launch! If it didn't work, make sure you're using a Chromium browser

This is pretty poorly tested. I just kind wrote it and whatever. I'm not responsible if anything goes wrong! (Neither is atlas44)
This does NOT work on Windows due to a limitation in the Chromium implementation of WebUSB (and probably other reasons!) If you're using Windows, TegraRcmGUI is a much better option.
This does NOT currently work on any browser but Chromium (and derivatives), because they don't implement WebUSB.
On GNU/Linux (Ubuntu, Fedora, Arch, etc.), you might get an 'Access denied' error! If you do, you can try creating a file at /etc/udev/rules.d/50-switch.rules
with the following contents:

SUBSYSTEM=="usb", ATTR{idVendor}=="0955", MODE="0664", GROUP="plugdev"

If you're lazy, I made a shell script for bash and zsh users here that you can use (as long as you use sudo or doas to get priveliges to create the file, since it's in /etc/.)
This has been tested and appears to work on GNU/Linux(Debian and Linux Mint), macOS/OS X, Android (unrooted), Android (rooted with TWRP) and Chrome OS/Chromium OS. Your mileage may vary.