JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css">
<form class="form-inline" role="form">
    <div class="input-group">
        <input class="form-control" type="text" />
<span class="input-group-btn">
<button class="btn btn-default" type="button">Search</button>
</span>

    </div>
</form>
<script src="//netdna.bootstrapcdn.com/bootstrap/3.0.0/js/bootstrap.min.js"></script>

CSS

.form-control:focus, .form-control:focus + span .btn{
    border-color:#1ABC9C;
    box-shadow:none;
}