gitlabhq/app/assets/stylesheets/sections/profile.scss

.profile_history {
  .event_feed {
    min-height:20px;
    .avatar {
      width:20px;
    }
  }
}

.profile_avatar_holder {
  float:left;
  width:60px;
  height:60px;
  margin-right:20px;
  img {
    width:60px;
    height:60px;
    background:#fff;
    padding: 1px;
    border: 1px solid #ddd;
  }
}