h2, div.authors, div.affiliations {
  text-align: center;
}

body {
  max-width: 900px;
  margin: 0 auto;
  padding: 5px;
}

div.main {
  text-align: justify;
  text-justify: inter-word;
}

div.affiliations {
    padding-top: 0.5rem;
    font-size: 0.85rem;
}