JSFiddle - React, Tailwind, and code Playground

HTML

<div class="img"></div>

CSS

body {
  margin: 0;
}
.img {
  height: 100vh;
  width: 100vw;
  background: url(https://s1.1zoom.ru/big0/697/Love_Night_Moon_Trees_Silhouette_Two_Dating_576752_1280x853.jpg);
}