h1, h2 {
      text-align: center;
  }
  h2  {
      font-style: italic;
  }
  h3  {
      font-size: medium;
      font-weight: bold;
      text-align: center;
  }
  p   {
      text-indent: 1em;
      text-align: justify;
  }
  #autor {
      text-align: right;
      font-style: italic;
      font-size: small;
  }
  .ref {
      font-size: small;
  }
  #Abspann {
      text-align: left;
      text-indent: 0px;
  }