JSFiddle - React, Tailwind, and code Playground

HTML

<script src="//code.jquery.com/jquery-1.11.3.min.js"></script>
<boby>
<div class="main_wrapper">
<!--slider_area_start-->
<div class="slider_area scroll"></div>
<!--slider_area_End-->
<!--content_area_1_start-->
<div class="cont_1_wrapper scroll">

	<div class="cont_area" >
    <h1>Protecting Brands in the Digital World</h1>
    <p>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.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>
    </div>
</div>
</div>
<!--content_area_1_End-->

</boby>

CSS

.main_wrapper{
	width:100%;
	height:auto;
	}

.slider_area{
	width:100%;
	height:300px;
	background:#9ad5e3 url(http://tofasmedgrill.com/wp-content/themes/tofas/images/18.jpg) center top no-repeat;	
	background-attachment:scroll;
	-webkit-background-attachment:scroll;
	background-size:cover;}
	

    
.cont_area{
	max-width:1000px;
	width:90%;
	height:auto;
	margin:auto;
	}

JavaScript

$(window).scroll(function() {
  var scrolledY = $(window).scrollTop();
  $('.scroll').css('background-position', 'center ' + ((scrolledY)) + '10px');
  
});