<div class="parallax-container">
    <div class="parallax">
    	<img src="../images/parallax_img.jpg" class="responsive-img" alt="Parallax">
    </div>
</div>

$(document).ready(function(){
    $('.parallax').parallax();
});

.parallax-container {
   height: "your height here";
}

<!-- Start Parallax Header -->
<header>
  <nav>
    <div class="container">
      <div class="nav-wrapper">
        <a href="index.html" class="brand-logo">Materialize</a>
        <ul class="right side-nav" id="nav-mobile">
          <li class="hide-on-small-only"><a href="collapsible.html"><i class="material-icons">arrow_back</i></a></li>
        </ul>
        <a class="button-collapse" href="#" data-activates='nav-mobile'><i class="material-icons">menu</i></a>
      </div>
    </div>
  </nav>
</header>
<!-- End Parallax Header -->

<!-- Start Parallax  -->
  <div class="parallax-container">
    <div class="parallax"><img src="../images/parallax_img.jpg" class="responsive-img" alt="Parallax"></div>
  </div>
  <div class="section white">
    <div class="row container">
      <h2 class="header">Parallax</h2>
      <p class="grey-text text-darken-3 lighten-3">Parallax is an effect where the background content or image 
      in this case, is moved at a different speed than the foreground content while scrolling.</p>
    </div>
    <div class="row container">
      <h4 class="light">Parallax Demo</h4>
      <p align="justify">
       Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the
       industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and 
       scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap 
       into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the 
       release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing 
       software like Aldus PageMaker including versions of Lorem Ipsum.</p>
       <h4 class="light">Parallax Demo</h4>
       <p align="justify">
       "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et 
       dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip 
       ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu 
       fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt 
       mollit anim id est laborum."</p>
    </div>
  </div>
  <div class="parallax-container">
    <div class="parallax"><img src="../images/parallax_img_2.jpg" class="responsive-img" alt="Parallax"></div>
  </div>
<!-- End Parallax  -->

<!-- Start Parallax Javascript -->
<script type="text/javascript">
  $(document).ready(function(){
      $('.parallax').parallax();
  });
</script>
<!-- EndParallax Javascript -->