body {
  font-family: Arial, sans-serif;
  background-color: #121212;
  color: #f0f0f0;
  margin: 0;
  padding: 20px;
}
.container {
  max-width: 500px;
  margin: auto;
  background-color: #1e1e1e;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 0 10px #333;
}
h1 {
  color: #00ffcc;
}
span {
  color: #ffd700;
}