JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">

<div>
    <button type="button" class="btn btn-primary btn-lg btn-md btn-sm btn-xs btn-block">Block level button with long long long long long text</button>
</div>

CSS

div {
    width: 300px;
}