JSFiddle - React, Tailwind, and code Playground

by fristyr

HTML

<div class="t2"></div>

CSS

.t2{
background:#333;
border-radius:5px;
color:#ccc;
}

.t2:before{
left:10px;
bottom:-10px;
width:0px;
height:0px;
border-left: 15px solid transparent;
border-right: 15px solid transparent;
border-top: 15px solid #333;
}