JSFiddle - React, Tailwind, and code Playground

HTML

<div class="first"><button type="button">Click Me!</button></div>
<div class="second">Hi</div>

CSS

.first {
    width: 100%;
    height: 1000px;
    background: #ccc;
}

.second {
    width: 100%;
    height: 1000px;
    background: #999;
}