XF 1.5 extra css to hide thread author and post time after upgrade

[HannahKang]

installed 1.5.9 and had to re install my clean and simple thread plug in but lost the Extra>css to hide post author and time is this a xen foro feature or plug in or can i just use extra css again?

 

[Sakata Gintoki]

You did use "Master Style" in extra.css lose to xenforo upgrade it's developer all template will to default.

Another your style is installed, you can change another style with template, not master style.