JSFiddle - React, Tailwind, and code Playground

by Terry Mun

HTML

<div class="post">
    <form>
        <textarea placeholder="Message Here..." maxlength="255"></textarea>
        <input type='submit' value='Post' />
    </form>
</div>

CSS

input[type='submit'] {
    display: none;
}
textarea:focus ~ input[type='submit'] {
    display: block;
}