.qa-section {
  margin-bottom: 100px;
}
@media only screen and (max-width: 769px) {
  .qa-section {
    margin-bottom: 50px;
  }
}

.qa-list h2 {
  font-size: 2.2rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  margin-bottom: 1em;
}