/* Ôn luyện mobile: header site không đè hàng số 1–15 */
body.practice-active .app-header,
body.practice-active #hlxAppHeader {
  display: none !important;
}
.ol-practice-screen.active {
  z-index: 2000 !important;
}
@media (max-width: 991.98px) {
  .ol-prac-matrix,
  #olPracMatrixBar {
    height: 56px !important;
    min-height: 56px !important;
  }
  .ol-prac-matrix-grid {
    grid-template-rows: repeat(2, 24px) !important;
  }
}