JSFiddle - React, Tailwind, and code Playground

HTML

<div></div>

CSS

html, body {
    height: 100%;
    margin: 0
}

div {
    background:
        linear-gradient(rgba(0, 0, 0, 0.45),rgba(0, 0, 0, 0.45)),
        url(https://www.petfinder.com/wp-content/uploads/2012/11/dog-how-to-select-your-new-best-friend-thinkstock99062463.jpg);
    background-size:cover;
    height: 100%;
    width: 100%
}