discourse/app/assets/stylesheets/common/base/topic.scss

#topic-title {

  .title-wrapper {
    float: left;
    width: 90%;
    .btn-small {
      margin: 0 6px 0 0;
    }
  }

  a.badge-category {
    margin-top: 5px;
  }

  a.edit-topic i { font-size: 0.8em; }
}

.topic-title-outlet {
  clear: both;
}