JSFiddle - React, Tailwind, and code Playground

HTML

<div></div>

CSS

body{
background: url(http://alpatriott.ru/images/fon.png)
}
div{
    width: 200px;
    height: 200px;
    //border-radius: 10px;
    border: 25px solid rgba(255,255,255,0.3);
    margin: 50px;
}