Parallax
          
        
The parallax scrolling effect can be activated in the Page Header by simple putting
          data-parallax="true" , like in the below code. If you want to deactivate parallax, you have to change
          true value with
          false.
          
        
<div class="page-header header-filter clear-filter" data-parallax="true" style="background-image: url('assets/img/bg.jpg');">
  <div class="container">
    <div class="row">
      <div class="col-md-8">
      ...
      </div>
    </div>
  </div>
</div>