JSFiddle - React, Tailwind, and code Playground

HTML

<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
<input id="name" type="text" class="form-control join-form" placeholder="Enter a Username">

CSS

.join-form {
    padding: 24px; /*comment this out to see effect of padding */
    margin: 12px 0px;
    font-size: 16px;
    letter-spacing: 0px;
    font-weight: 300;
}