JSFiddle - React, Tailwind, and code Playground

HTML

<div class="shape"></div>

CSS

.shape { 
    width: 200px; 
    height: 50px; 
    -webkit-transform: skew(30deg); 
    -moz-transform: skew(30deg); 
    transform: skew(30deg);
    background: #000;
    margin: 20px;
}