body {
  font-family: sans-serif;
  text-align: center;
  padding: 20px;
}
button {
  padding: 10px 20px;
  font-size: 16px;
  cursor: pointer;
}
.card-box {
  margin-top: 30px;
  font-size: 50px;
  color: #444;
}
.meaning-box {
  margin-top: 20px;
  font-size: 18px;
  color: #333;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}