Hey, i’m trying to add a background image to posts only belonging to moderators group as seen here: Alterac Valley Adjustments Incoming - WoW Classic General Discussion - World of Warcraft Forums where blizz members get a background image but i’m not sure where to start. I’ve read the introduction to themes but didn’t find(or missed) how to setup a conditional css like that. Any suggestions?

Custom post image

Falco (Falco) 28 בינואר,‏ 2020,‏ 1:29am 2

נושא		תגובות	צפיות
Convert a post to Moderator by default Product Support	4	1066	14 ביולי,‏ 2016
Background SVG distinguished posts Development	3	1454	7 במרץ,‏ 2019
Global Backgrounds Feature	12	2639	24 בספטמבר,‏ 2018
Staff CSS topic background Product Support	3	686	21 בנובמבר,‏ 2019
Styling based on group membership Feature	5	1451	18 בינואר,‏ 2014