JSFiddle - React, Tailwind, and code Playground

by Edward

HTML

<div class="block"></div>

SCSS

body {
	background-color: #fff;
}

.block {
	position: relative;
	width: 300px;
	height: 100px;
	background-color: #eee;
	margin: 20px auto;
	
	&::after {
		position: absolute;
		content: '';
		bottom: 0;
		left: 0;
		border-style: solid;
		border-width: 0 30px 30px 0;
		border-color: #fff rgba(0, 0, 0, 0.5);
		box-shadow: 1px -1px 1px rgba(0, 0, 0, 0.2);
	}
}