body {
  font-family: Arial, sans-serif;
  background: #111;
  color: white;
  text-align: center;
}
.login-container {
  margin: 10% auto;
  padding: 20px;
  background: #222;
  width: 300px;
  border-radius: 8px;
}
input {
  width: 90%;
  padding: 10px;
  margin: 10px 0;
}
button {
  padding: 10px 20px;
}