JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/css/bootstrap.min.css">
<div>
    <span>Foo</span>
    <button class="btn btn-link">Button</button>
    <span>Bar</span>
</div>

CSS

div span {
    vertical-align: middle;
}