JSFiddle - React, Tailwind, and code Playground
by epidemian
HTML
<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css">
<script src="//netdna.bootstrapcdn.com/bootstrap/3.1.1/js/bootstrap.min.js"></script>
Press Go! without checking any button in the group.
<form action="#">
<div class="btn-group" data-toggle="buttons">
<label class="btn btn-primary">
<input type="radio" name="options" value="one" required>One
</label>
<label class="btn btn-primary">
<input type="radio" name="options" value="two" required>Two
</label>
<label class="btn btn-primary">
<input type="radio" name="options" value="three" required>Three
</label>
</div>
<input type="submit" class="btn" value="Go!">
</form>