JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">
    <!-- Innholdet ditt <her--></her-->
</div>

CSS

.container {
    width: 100%;
    height: 100vh;
    background: url('https://download.unsplash.com/photo-1432836431433-925d3cc0a5cd');
    background-size: cover;
     background-position: center;
}