body {
  font-family: Arial, sans-serif;
  max-width: 600px;
  margin: 30px auto;
  padding: 20px;
  background-color: #f5f5f5;
  color: #333;
  text-align: center;
}

input, select, button {
  width: 90%;
  padding: 10px;
  margin-top: 10px;
  font-size: 16px;
}

button {
  background-color: #27ae60;
  color: white;
  border: none;
  cursor: pointer;
}

section {
  background: #fff;
  border: 1px solid #ddd;
  padding: 15px;
  margin-bottom: 20px;
}