JSFiddle - React, Tailwind, and code Playground

HTML

<div style="height: 1000px; width: 1000px" class="coolness">
   
</div>

CSS

.coolness {
   background: -webkit-radial-gradient(circle, rgba(100, 100, 100, 0.2), rgba(0, 0, 0, 0.9));  
}