body {
  font-family: Arial, sans-serif;
  padding: 40px;
  background-color: #f5f5f5;
}

.container {
  background: white;
  padding: 30px;
  border-radius: 8px;
  max-width: 600px;
  margin: auto;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}