JSFiddle - React, Tailwind, and code Playground

HTML

<div style="border: 1px solid blue;"><div style="display:inline-block;"></div></div><div>Gap above created by inline-block</div><div style="display:block;"><input type="hidden" /></div>
<div>No gap above if using block</div>

CSS

html, body {
    margin: 0;
    padding: 0;
}

div {
    border: 1px solid red;
}