JSFiddle - React, Tailwind, and code Playground

HTML

<div></div>

CSS

div {
    background-color: #8292CB;
    height: 50px;
    width: 200px;
    margin: 0 auto;
    border-radius: 10px;
    position: relative;
    padding: 10px;
}
div:before {
    content:"";
    display: block;
    position: absolute;
    top: 10px;
    right: 10px;
    left: 10px;
    bottom: 10px;
    background-color: #4659A5;
    border-radius: 8px;
}