JSFiddle - React, Tailwind, and code Playground
by sc0rp10
HTML
<link rel="stylesheet" href="http://getbootstrap.com/dist/css/bootstrap.min.css">
<form class="form-inline" role="form">
<div class="form-group">
<div class="input-group">
<label class="sr-only" for="exampleInputEmail2">Email address</label>
<div class="input-group-addon">+</div>
<input type="email" class="form-control" id="exampleInputEmail2" placeholder="Введите номер"/>
</div>
</div>
<button type="submit" class="btn btn-default">Sign in</button>
</form>