body {
  font-family: Arial, sans-serif;
  background-color: #f5f5f5;
  text-align: center;
  padding: 20px;
}

.cards-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
  margin-top: 30px;
}

.flip-card {
  background-color: transparent;
  width: 300px;
  height: 200px;
  perspective: 1000px;
}

.flip-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.8s ease-in-out;
  transform-style: preserve-3d;
}

.flip-card-inner.flipped {
  transform: rotateY(180deg);
}

.flip-card-front, .flip-card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: bold;
  border: 2px solid #ccc;
  border-radius: 12px;
  background-color: #fff;
  box-sizing: border-box;
  padding: 10px;
}

.flip-card-back {
  transform: rotateY(180deg);
}