body {
  font-family:sans-serif;
  text-align: center;
  background-color: #b1ddd7;
  margin: 0;
  padding: 0;
}

h2 {
  color: #343a40;
}

h3 {
  color: #495057;
}

a {
  color: #007bff;
}


#flashcard {
  background: white;
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  margin: 50px auto;
  width: 350px;
}

input[type="radio"] {
  margin: 5px;
}

.navigation {
  margin-top: 30px;
  font-weight: bold;
}