body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
  }
  
  .login-container, .dashboard-container {
    width: 300px;
    padding: 20px;
    border: 1px solid #ddd;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    text-align: center;
  }
  
  h2 {
    margin-top: 0;
  }
  
  label {
    display: block;
    margin-top: 10px;
  }
  
  input {
    width: 100%;
    padding: 8px;
    margin-top: 5px;
    box-sizing: border-box;
  }
  
  button {
    width: 100%;
    padding: 10px;
    background-color: #4CAF50;
    color: #fff;
    border: none;
    border-radius: 4px;
    margin-top: 10px;
  }
  
  #error-message {
    color: red;
    margin-top: 10px;
  }