/* General layout */
body {
  font-family: system-ui, sans-serif;
  max-width: 1100px;
  margin: 30px auto;
  padding: 12px;
  background: #f9fafb;
  color: #111827;
  font-size: large;
}

h1 {
  font-size: 1.8em;
  margin-bottom: 30px;
}

/* Quiz grid */
.questions {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: 16px;
}
@media (min-width: 900px) {
  .questions {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 1200px) {
  .questions {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Question blocks */
.question-block {
  background: #abd68f;
  border: 3px solid #e5e7eb;
  padding: 15px;
  border-radius: 12px;
  box-shadow: 0 3px 6px rgba(0, 0, 0, 0.1);
  transition: border-color 0.3s ease;
}
.q-title {
  font-weight: 600;
  margin-bottom: 8px;
}

/* Inputs */
.question-block input[type="radio"],
.question-block input[type="checkbox"] {
  margin-right: 6px;
}
.question-block li {
  list-style: none;
  margin-bottom: 6px;
}

/* Buttons */
.btn {
  background: #0d8822;
  color: white;
  border: none;
  margin-top: 15px;
  padding: 8px 14px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 18pt
}