anchor.diff:  
       <div class="collapse navbar-collapse" id="app-header-navbar-links">
         <% if signed_in? %>
  -        <ul class="navbar-nav mr-auto">
  +        <ul class="navbar-nav mr-auto ml-md-3">
             <li class="nav-item dropdown">
               <a class="nav-link dropdown-toggle" data-toggle="dropdown" href="#" role="button" aria-haspopup="true" aria-expanded="false">
                 <span class="nav-link-in1">Projects</span>
  
positive.code:         </li>
        </ul>
      <% end %>
  </nav>
  
negative.code: <nav class="app-header navbar navbar-expand-md">
    <div class="container">
      <a class="navbar-brand" href="/" title="Iconly">
        <span>Icon</span><span class="text-default">ly</span>
      </a>
  
      <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#app-header-navbar-links" aria-controls="app-header-navbar-links" aria-expanded="false" aria-label="Toggle navigation">
        <span class="navbar-toggler-icon"></span>
  