JSFiddle - React, Tailwind, and code Playground

HTML

<div class="tags">
 <a href="#">tag</a>
</div>

CSS

.tags a{
    float:left;
	height:24px;
	line-height:24px;
	position:relative;
	font-size:11px;     
	margin-left:20px;
	padding:0 10px 0 12px;
	background:#0089e0;
	color:#fff;
	text-decoration:none;

	} 

.tags a:before{
	content:"";
	float:left;
	position:absolute;
	top:0;
	left:-12px;
	width:0;
	height:0;
	border-color:transparent #0089e0 transparent transparent;
	border-style:solid;
	border-width:12px 12px 12px 0;		
	}