body {
    background-color: #ffffff;
    color: #1e1e1e;
    font-family: Helvetica, sans-serif;
  }
  @media (prefers-color-scheme: dark) {
    body {
      background-color: #1e1e1e;
      color: #d9d9d9;
      font-family: Helvetica, sans-serif;
    }
  }
  h1 {
    text-align: center;
    padding-top: 200px;
  }