JSFiddle - React, Tailwind, and code Playground

by lollero

HTML

<div id="navbar"></div>

<div id="overlay"></div>

CSS

#navbar {
    width: 200px;
    height: 20px;
    background: red;
    position: relative;
    z-index: 1;
}


#overlay {
    position: fixed;
    z-index: 1;
    top: 0px;
    right: 0px;
    bottom: 0px;
    left: 0px;
    background: #000;
    opacity: 0.5;
}