navigation2.html

<nav class="navbar navbar-expand-lg navbar-light fixed-top" id="mainNav2">
  <div class="container">
    <a class="navbar-brand js-scroll-trigger" href="index.html">Projeto SAP</a>
     <button class="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse" data-target="#navbarResponsive"
      aria-controls="navbarResponsive" aria-expanded="false" aria-label="Toggle navigation">
      <span class="navbar-toggler-icon"></span>
    </button>
    <div class="collapse navbar-collapse" id="navbarResponsive">
      <ul class="navbar-nav ml-auto">
        <li class="nav-item">
          <a class="nav-link js-scroll-trigger" href="sobre.html">Sobre</a>
        </li>
        <li class="nav-item">
          <a class="nav-link js-scroll-trigger" href="historias.html">Histórias</a>
        </li>
        <li class="nav-item">
          <a class="nav-link js-scroll-trigger" href="/dicio">Dicionário</a>
        </li>
        <li class="nav-item">
          <a class="nav-link js-scroll-trigger" href="/jogos">Jogos</a>
        </li>
        <li class="nav-item dropdown">
          <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown"
             aria-haspopup="true" aria-expanded="false">
            Contato
          </a>
          <div class="dropdown-menu" aria-labelledby="navbarDropdown">
            <a class="nav-link " href="https://www.facebook.com/projetosapufop/">Facebook</a>
            <a class="nav-link " href=" https://www.instagram.com/projetosap/?hl=pt-br">Instagram </a> </div>
        </li>


      </ul>
    </div>
  </div>
</nav>