JSFiddle - React, Tailwind, and code Playground

by nirus

HTML

<div class="arrow_box">hi</div

CSS

.arrow_box {
	position: relative;
	background: #000;
	border: 4px solid #f1f582;
}
.arrow_box:after, .arrow_box:before {
	left: 100%;
	border: solid transparent;
	content: " ";
	height: 0;
	width: 0;
	position: absolute;
	pointer-events: none;
}

.arrow_box:after {
	border-color: rgba(213, 126, 198, 0);
	border-left-color: #d57ec6;
	border-width: 30px;
	top: 50%;
	margin-top: -30px;
}