JSFiddle - React, Tailwind, and code Playground

HTML

<button>
    <h1 contenteditable>Pewpew</h1>
</button>

CSS

button, body, html {
    width: 100%;
    height: 100%;
    padding: 0;
    border: 0;
    margin: 0;
    background: transparent;
    outline: none;
}