tabs.css

en-tabs {
  display: table;
  line-height: normal;
}
en-tabs en-tab {
  font-size: 1.3rem;
  border-bottom: 0.2rem solid transparent;
  padding: 0.9rem 1.2rem;
  display: table-cell;
  font-weight: 600;
  margin-left: 1rem;
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
}
en-tabs .no-touch en-tab:hover,
en-tabs en-tab:hover,
en-tabs en-tab:active {
  border-color: #556069;
}
en-tabs en-tab.active,
en-tabs en-tab.active:active,
en-tabs .no-touch en-tab.active:hover,
en-tabs en-tab.active:hover {
  border-color: #1500ff;
  color: #1500ff;
}

en-tab-container {
  display: block;
}
en-tab-container en-tab-pane {
  display: none;
}
en-tab-container en-tab-pane.active {
  display: block;
}