Hard to read cluster description text when zooming in

[Dssdiego]

Hello!

When zooming in the cluster M52, I found it hard to read the description texts because of the stars in the background.

Steps to reproduce:

1. Go to the link https://stellarium-web.org/skysource/M52?fov=0.27725&date=2021-05-14T21:23:23Z&lat=51.04&lng=3.71&elev=0
2. Wait for the stars to load
3. Zoom in a little bit (text should be hard to read)

Maybe the description text box should be more opaque?

Thanks in advance!