gab-social/app/javascript/gabsocial/components/avatar_overlay/avatar_overlay.scss

.avatar-overlay {
  @include circle(48px);

  &__base {
    @include circle(36px);
  }

  &__overlay {
    @include circle(36px);
    @include abs-position(auto, 0, 0);
    
    z-index: 1;
  }
}