I am not able to disable flair or user titles on mobile

[hipp0]

Some reason its not working when I add CSS to the mobile area, not sure if I am doing it right.

.topic .post-avatar .avatar-flair,
.topic .avatar-flair {
  display: none !important;
}

[Lilly]

does this work if you put it in common css tab?

@include viewport.until(md) {
  
  .topic-avatar .avatar-flair {
      display: none;
  }
}