<nav class="header navbar navbar-expand-lg">
  <div class="container-fluid">
    <nav class="nav">
      <h4><?= $viewDatas['class_icon'] ?></i><?= $viewDatas['title'] ?></h4>
    </nav>
    <nav class="nav justify-content-center"></nav>
    <nav class="nav justify-content-end"></nav>
  </div>
</nav>