body {
  font-family: Arial, sans-serif;
  text-align: center;
  margin-top: 60px;
}
input, button {
  padding: 8px;
  font-size: 16px;
}
#result {
  font-size: 20px;
  margin-top: 20px;
}
.served {
  margin-top: 40px;
  color: #555;
  font-size: 14px;
}