.hidden {
    display: none;
  }
  
  #login-section, #dashboard-section {
    margin: 20px;
    padding: 20px;
    border: 1px solid #ccc;
  }
  
  table {
    border-collapse: collapse;
    width: 100%;
    margin-top: 10px;
  }
  
  table, th, td {
    border: 1px solid #ccc;
  }
  
  th, td {
    padding: 8px;
  }
  
  .message {
    color: red;
    margin: 10px 0;
  }