body {
    margin: 0;
    font-family: Arial, sans-serif;
  }
  
  #auth-container,
  #app-container {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
  }
  
  #auth-button {
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
  }
  
  #notes-area {
    width: 90%;
    height: 90%;
    border: none;
    outline: none;
    font-size: 16px;
    line-height: 1.5;
    resize: none;
  }