s</h4>
<form class="form-horizontal">
  <div class="control-group error">
    <label class="control-label" for="inputError">Radio with error</label>
    <div class="controls">
      <label class="radio">
        <input type="radio" id="inputError"> Oh hai
      </label>
      <span class="help-inline">Please correct the error</span>
    </div>
  </div>
</form>

<div class="row">
  <div class="span4">
    <h4>Prepend and append on inputs</h4>
    <form>
      <div class="controls">
        <div class="input-