JSFiddle - React, Tailwind, and code Playground

by rarteaga

HTML

<div class="contenedor">
</div>

CSS

.contenedor {
    width: 400px;
    height: 10px;
    background: #008DC5;
    padding: 15px;
    position: relative;
    margin-top: 15px;
}

.contenedor:after {
    border-color: #008DC5 transparent;
    border-style: solid;
    border-width: 10px 10px 0;
    content: "";
    display: block;
    left: 35px;
    position: absolute;
    bottom: -10px;
    width: 0;
}