JSFiddle - React, Tailwind, and code Playground

by vals

HTML

<div class="base" id="no"></div>
<div class="base" id="shadow"></div>

CSS

.base {
    width: 200px;
    height: 200px;
    background: linear-gradient(45deg, black, white, black);
}
#shadow {
    box-shadow: 0px 0px 3000px 0 rgba(0,0,255,0.5) inset;
 }