_simple.png" class="logo" alt="logo">
</a>


    
  </div>

  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbar-collapsible" aria-controls="navbar-collapsible" aria-expanded="false" aria-label="Toggle navigation">
    <span class="navbar-toggler-icon"></span>
  </button>

  
  <div id="navbar-collapsible" class="col-lg-9 collapse navbar-collapse">
    <div id="navbar-center" class="mr-auto">
      
      <div class="navbar-center-item">
        <ul id="navbar-main-elem