JSFiddle - React, Tailwind, and code Playground
HTML
<div class="wrap">
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nunc et tortor dui, ac ornare mauris. Quisque tincidunt ipsum ac ante commodo non suscipit tortor volutpat.</p>
<p>Donec tristique, sapien vel posuere mattis, sem massa pellentesque dolor, eget hendrerit nibh libero sed turpis. Fusce elementum lectus eu enim pharetra placerat.</p>
<p>Sed in nibh vestibulum quam malesuada fringilla. Suspendisse congue bibendum congue. Fusce eu risus ac tortor blandit euismod.</p>
<p>Donec rutrum eros commodo leo ultricies tempus. Aliquam et mi dolor, a faucibus neque. Nam vitae dui felis, at imperdiet mi. Aenean viverra sapien id dui mattis laoreet. Duis dictum tristique velit, eget vulputate purus tempor non.</p>
<p>Cras odio augue, hendrerit nec lobortis sed, ullamcorper a leo. Pellentesque ut nibh sapien, vitae ullamcorper diam. Donec fermentum leo imperdiet tortor malesuada congue.</p>
<div class="shadow"></div>
</div>
CSS
.wrap {
position: relative;
}
.shadow {
position: absolute;
left: 0;
right: 0;
bottom: 0;
height: 60%;
background: -moz-linear-gradient(top, rgba(255,255,255,0) 0%, rgba(255,255,255,0.9) 90%, rgba(255,255,255,1) 100%); /* FF3.6+ */
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(255,255,255,0)), color-stop(90%,rgba(255,255,255,0.9)), color-stop(100%,rgba(255,255,255,1))); /* Chrome,Safari4+ */
background: -webkit-linear-gradient(top, rgba(255,255,255,0) 0%,rgba(255,255,255,0.9) 90%,rgba(255,255,255,1) 100%); /* Chrome10+,Safari5.1+ */
background: -o-linear-gradient(top, rgba(255,255,255,0) 0%,rgba(255,255,255,0.9) 90%,rgba(255,255,255,1) 100%); /* Opera 11.10+ */
background: -ms-linear-gradient(top, rgba(255,255,255,0) 0%,rgba(255,255,255,0.9) 90%,rgba(255,255,255,1) 100%); /* IE10+ */
background: linear-gradient(top, rgba(255,255,255,0) 0%,rgba(255,255,255,0.9) 90%,rgba(255,255,255,1) 100%); /* W3C */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#00ffffff', endColorstr='#ffffff',GradientType=0 ); /* IE6-9 */
}