JSFiddle - React, Tailwind, and code Playground

HTML

<div class="box">Screen 1</div>
<div class="box">Screen 2</div>
<div class="box">Screen 2</div>

CSS

html, body {
    margin: 0;
    padding: 0
}
    .box {
        width: 100vw;
        max-width:100%;
        height: 100vh;
        display: table;
    }