JSFiddle - React, Tailwind, and code Playground

HTML

<div class="box"></div>

CSS

.box {
    -webkit-box-shadow: -10px 32px 24px -28px rgba(0, 0, 0, 1);
    -moz-box-shadow: -10px 32px 24px -28px rgba(0, 0, 0, 1);
    box-shadow: -10px 32px 24px -28px rgba(0, 0, 0, 1);
    height:250px;
    width:250px;
    background:grey;
}