.quiz-section {
  padding: 40px 0 50px 0;
}
.quiz-form {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.07);
  padding: 28px 24px;
  max-width: 480px;
  margin: 0 auto;
}
.quiz-question {
  margin-bottom: 22px;
}
.quiz-question p {
  margin-bottom: 8px;
  color: #198754;
}
.quiz-result {
  background: #e9fbe7;
  border-radius: 12px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.07);
  padding: 28px 24px;
  max-width: 480px;
  margin: 32px auto 0 auto;
  text-align: center;
}
#certificateSection h3 {
  color: #198754;
  margin-top: 10px;
}
#failSection h3 {
  color: #b94a48;
  margin-top: 10px;
}
.btn.primary-btn, .btn.secondary-btn {
  margin-top: 16px;
}