No, not specifically like that, although the question-and-answer plugin does something approximating this, where the post selected as the correct answer will be pinned under OP (It also appears in the regular flow of replies.)
You could override those specific elements from the Custom CSS tab in the ACP.
@sharonyue you should restart nginx as this file is likely cached.
It looks good. Thank you guys.
Fo what it's worth - I have V3-beta1 working with Ubuntu 22 with and Nodejs V18.13.0