body {
  background-color: #f5f5f5;
  font-family: "Segoe UI", sans-serif;
}

.exam-container {
  width: 60%;
  margin: 40px auto;
  background: white;
  padding: 20px 40px;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.exam-header {
  background-color: #0078d7;
  color: white;
  padding: 10px 20px;
  border-radius: 6px;
  font-weight: bold;
}

.question-card {
  padding: 20px;
  background: #fff;
  border: 1px solid #ccc;
  border-radius: 6px;
}

.btn {
  min-width: 120px;
}