.course-section-tabs {
  border-radius: 7px;
  border: 1px solid #e1e0e4;
  padding: 1rem;
  margin-bottom: 1rem;

  .nav-tabs:first-child {
    border-bottom: solid 2px;
    margin-bottom: 0 !important;
    .tab_level_0 {
      .nav-link {
        border-radius: 7px 7px 0 0;
      }
    }
  }

  .nav-tabs:last-child {
    margin-top: 0;
    margin-bottom: 0 !important;
    .tab_level_1 {
      .nav-link {
        border-radius: 0 0 7px 7px;
      }
    }
  }

}

.sections.topics {
  #section-0 {
    .course-section-header {
      display: none !important;
    }
  }
}