Extremely easy. Please don't try to run a forum if you don't know anything about web design or development.
find ".post.classic .post_author" in global.css
change background property to url('path/to/image')
fix your background sizes or whatever
note: this makes all posts have the same background. if you want to change certain users to specific images, you will likely need a plugin (or for certain usergroups you can use template conditionals)
MyBB Support
[help] postbit background
Submitted by Hollyman13, 23-01-2018, 12:21 PM, Thread ID: 70931
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