.ifc-flashcards {
  border: 2px solid #ddd;
  padding: 15px;
  max-width: 400px;
  margin: 20px auto;
  text-align: center;
}
.ifc-card-front, .ifc-card-back {
  padding: 10px;
  margin: 10px 0;
  min-height: 100px;
  border-radius: 6px;
}
.ifc-card-back {
  background: #f1f1f1;
}
.ifc-controls button {
  margin: 5px;
  padding: 8px 12px;
  font-size: 15px;
  cursor: pointer;
}
audio {
  margin-top: 10px;
}