body {
  background: #f5f5f5;
  font-family: Arial, sans-serif;
}

.login-box {
  width: 300px;
  background: white;
  padding: 2rem;
  margin: 80px auto;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
  border-radius: 10px;
}

.login-box h1 {
  text-align: center;
  margin-bottom: 1rem;
}

.login-box input {
  width: 100%;
  padding: 8px;
  margin-bottom: 1rem;
  border-radius: 5px;
  border: 1px solid #ccc;
}

.login-box button {
  width: 100%;
  padding: 10px;
  background: #333;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

.error-box {
  background: #ffcccc;
  color: #900;
  padding: 10px;
  margin-bottom: 1rem;
  border-radius: 5px;
}