JSFiddle - React, Tailwind, and code Playground

HTML

<div class="outer">
    <div class="inner">
    </div>
</div>

CSS

.outer{
    border: 1px solid black;
    width: 100px;
    height: 50px;
    margin: 100px;
}

.inner{
    background: blue;
    width: 100px;
    height: 50px;
    
    transform: rotate(-40deg);
    -webkit-transform: rotate(-40deg);
}