I really like this software of yours and I appreciate your efforts！

I would like you to add transparency adjustment for the background of the display button and also resize to a smaller size? The current 32px still seems a bit too big sometimes.

Also, if you press the spacebar first and then press other function keys at the same time, they are not displayed at the same time, but are replaced by other keys. I would like them to be displayed at the same time when you press the spacebar first and then press the other function keys at the same time.