body {
  background-color: #fff;
  font-family: Arial, sans-serif;
}

h1 {
  margin-bottom: 1rem;
}

.card {
  border: 1px solid #999;
  background-color: #E0F7FA;
}

.card-header {
  background-color: #B2EBF2;
  border-bottom: 1px solid #999;
  font-size: 1.1rem;
  text-align: center;
}

.card-body {
  text-align: center;
  font-size: 1.1rem;
}

footer {
  margin-top: 2rem;
  color: gray;
  font-size: 0.8em;
}