How to modify my board to ....

[naima]

Hello this is my board and I would like to modify it so that my boards are semitransparent to make slightly visible the underlying background image ...

also the publicity of the top between the header image and the boards can be moved more down?

And how can I add a chat on the forum that is visible by all members?

[naima]

What I wanted to do is make the board slightly semitransparent is that possible?