theme hueman bio-avatar shows FontAwesome

I use hueman child theme.
In hueman theme in the bio avatar of autor bio, you could see over the gravatar (logo) of my site a FontAwesome icon.
I comment the lines in the hueman child theme style. But the FontAwesome and little square background are still there. What’s wrong? how to disable?

.author-bio .bio-avatar:after {
  /* background: #3b8dbd; */
  position: absolute;
  right: 0;
  bottom: 0;
  padding: 4px 4px;
  content: "\f040";
  color: #fff;
  font-size: 12px;
  line-height: 12px;
  width: 12px;
  font-style: normal;
  /* font-family: FontAwesome; */
  text-align: center;
  -webkit-border-radius: 3px;
  border-radius: 3px;
}