body {
  font-family: sans-serif;
  padding: 1rem;
  background: #f9f9f9;
}
h2 {
  text-align: center;
}
.section {
  margin-bottom: 2rem;
}
.section-title {
  font-size: 1.2rem;
  font-weight: bold;
  margin-bottom: 0.5rem;
}
.question {
  background: white;
  padding: 10px;
  margin-bottom: 5px;
  border-radius: 6px;
  border: 1px solid #ddd;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.question.crossed {
  text-decoration: line-through;
  color: gray;
}
.controls {
  display: flex;
  gap: 5px;
}
button {
  font-size: 0.8rem;
  padding: 2px 6px;
}