.fraction-table {
  border-collapse: collapse;
  width: auto;
  display: inline-table;
  margin: 0 4px;
}

.fraction-table td {
  text-align: center;
  padding: 2px 8px;
}

.fraction-table tr:nth-child(1) td {
  border-bottom: 1px solid black;
}

.rational-scope,
.rational-center-row,
.rational-stack,
.rational-final-stack,
.rational-restrictions-line {
  width: 100%;
}

.rational-center-row {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  text-align: center;
}

.rational-stack,
.rational-final-stack {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.rational-stack {
  gap: 10px;
}

.rational-final-stack {
  gap: 6px;
}

.rational-restrictions-line {
  margin-top: 8px;
  text-align: center;
}

.step-layout {
  width: 100%;
  display: flex;
  justify-content: center;
}

.final-answer-box {
  font-weight: bold;
  margin-top: 12px;
  font-size: 1.1em;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.final-answer-box .fraction-table {
  margin: 0;
  vertical-align: middle;
}

.final-answer-box .answer-label {
  line-height: 1;
}