JSFiddle - React, Tailwind, and code Playground

HTML

<div id="bg">
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</div>

CSS

#bg {
  background-image:    url(http://placehold.it/480x800);
  background-size:     contain;
  background-repeat:   no-repeat;
  background-position: center center;
  max-width: 480px;
  max-heught: 800px;
}