const navigation = `
<nav>
  <a href="index.html" class="nav-logo">
    <img src="img/Logo2.png" alt="Cyanotypie Logo" class="logo">
  </a>
  <a href="index.html">Home</a>
  <a href="ueber_uns.html">Über uns</a>
  <a href="eis_projekt.html">Projekt</a>
  <a href="team.html">Steckbrief</a>
  <a href="notenrechner.html">Notenrechner</a>
  <a href="kontakt.html">Kontakt</a>
  <a href="impressum.html">Impressum</a>
</nav>
`;

document.body.insertAdjacentHTML('afterbegin', navigation);