body {
  font-family: Arial, sans-serif;
  background: #f2f2f2;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.login-box {
  background: #fff;
  padding: 25px;
  border-radius: 8px;
  width: 300px;
  box-shadow: 0 4px 10px rgba(0,0,0,.1);
}

.login-box h2 {
  text-align: center;
  margin-bottom: 20px;
}

input {
  width: 100%;
  padding: 10px;
  margin: 8px 0;
}

button {
  width: 100%;
  padding: 10px;
  background: #007bff;
  color: #fff;
  border: none;
  cursor: pointer;
}

button:hover {
  background: #0056b3;
}

.error {
  color: red;
  text-align: center;
  margin-top: 10px;
}