Remove white bar from collections and adjust to more elegant look

[lamelea]

Hello

I'm trying to adjust the "collection" section on my shopify prestige theme. 

I want to remove the white bar, change the currency format from SFR. 59.95 to CHF 59.95, make "the reviews" look more elegant (the stars not so robust as currently):

as an example: 

Thank you in advance.

[JulianDavis]

Any reply?
I really want to change Sfr to CHF on the website!

It doesn't look professional the Sfr in Switzerland