I have a site with a beautiful jumbotron and a sexy email sign up bar call to action. However my site is german and english and the place holder text in the mail signup form is instructions for what to do. How can I make the button group not act as a button group for when the document is smaller then mobile. I'd prefer not to use JS or Jquery for this.
<form action="http://forkables.us2.list-manage.com/subscribe/post" method="post" id="mc-embedded-subscribe-form" name="mc-embedded-subscribe-form" class="row validate" target="_blank" role="form">
<div class="col-md-8 mc-field-group">
<div class="form-group input-group">
<label class="sr-only" for="mce-EMAIL">Your Email address</label>
<input name="EMAIL" type="email" class="form-control input-lg" id="mce-EMAIL" placeholder="Sign up for our Email newsletter">
<span class="input-group-btn">
<button type="submit" id="mc-embedded-subscribe" class="btn btn-primary btn-lg">Sign up</button>
</span>
</div>
</div>
</form>