JSFiddle - React, Tailwind, and code Playground

HTML

<form class="navbar-form text-center">
        <input type="text" class="span2">
        <input type="text" class="span2">
        ...
        <button type="submit" class="btn btn-success">I'm Done</button>
    </form>

CSS

.span2 {
    display: block;
    margin-bottom: 25px;
}