 button groups</h4>
<form class="form-inline">
  <button class="btn btn-success">Save</button>
  <button class="btn btn-info">Add new</button>
  <div class="btn-group">
    <a class="btn dropdown-toggle" data-toggle="dropdown" href="#">
      <i class="icon-user"></i> User
      <span class="caret"></span>
    </a>
    <ul class="dropdown-menu">
      <li><a href="#">Profile</a></li>
      <li class="divider"></li>
      <li><a href="#">Sign Out</a></li>
    </ul>
  </div>
</form>

<h4>Horizontal form error