JSFiddle - React, Tailwind, and code Playground

HTML

<form>
    <span id="here">
    <input type="text" id="username"></input>
    </span>
</form>
<div>Append</div>

CSS

.errors {
    position:absolute;
    z-index:2; // or higher than parent div
    width:100%;
    height:100%;
}

JavaScript

$("div").click(function() {
    $('<div class="errors">OO</div>').appendTo('#here');
});