body {
  background: #f4f6fa;
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
}
.login-container {
  background: #fff;
  max-width: 340px;
  margin: 80px auto;
  padding: 32px 24px 24px 24px;
  border-radius: 8px;
  box-shadow: 0 2px 16px rgba(0,0,0,0.08);
  text-align: center;
}
.login-container h2 {
  margin-bottom: 18px;
  color: #222;
}
.login-container input {
  width: 100%;
  padding: 10px;
  margin: 8px 0;
  border: 1px solid #d0d0d0;
  border-radius: 4px;
  font-size: 16px;
}
.login-container button {
  width: 100%;
  padding: 10px;
  background: #2d72d9;
  color: #fff;
  border: none;
  border-radius: 4px;
  font-size: 16px;
  margin-top: 10px;
  cursor: pointer;
  transition: background 0.2s;
}
.login-container button:hover {
  background: #1a4e96;
}
.error {
  color: #c00;
  margin-top: 10px;
  font-size: 14px;
  min-height: 18px;
}