.bank-question .regrouping-equation {
  display: flex;
  min-height: 9mm;
  align-items: center;
  justify-content: center;
  gap: 2mm;
  font-size: 18px;
  font-weight: 650;
  letter-spacing: .02em;
}

.bank-question .regrouping-workspace {
  min-height: 6mm;
  margin: 1mm 8mm 0;
  border-bottom: 1px dotted #9bb4ba;
}

.bank-question .kblank {
  display: inline-block;
  min-width: 16mm;
  height: 7mm;
  vertical-align: middle;
  border-bottom: 1px solid #859ca5;
}

.bank-answers .regrouping-workspace { display: none; }

@media (max-width: 700px) {
  .bank-question .regrouping-equation { font-size: 16px; }
}

@media print {
  .bank-question .regrouping-equation { font-size: 17px; }
  .bank-question .regrouping-workspace { min-height: 5mm; }
}