JSFiddle - React, Tailwind, and code Playground

HTML

<html>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css">

<div align="center" class="container animated fadeIn">
    <div class="row">
        <div class="col-md-12 col-md-offset-1 col-sm-12 box-shadow">

            <p>meine seite.</p>

            <div class="input-group mb-3">
                <span class="input-group-text">hier lang: </span><input type="text" class="form-control" style="max-width: 250px;" required><button class="btn btn-success" type="submit">Klick</button>
            </div>

        </div>
    </div>
</div>