Try to resize input and add-ons like buttons in Twitter Bootstrap 2.3.2

close.ctp

<?php

  <span class="input-prepend input-append">
      <span class="add-on">'$</span>
      <?php echo $this->Form->input(amount', array('div' => false, 'type' => 'text', 'label' => false, 'class' => 'money input-mini')) ?>
      <button type='submit' class="btn btn-small btn-success" title='Send'><i class="icon-ok icon-white"></i></button>
      <button type='button' class="btn btn-small btn-danger cancel-adjustment" title='Cancel'><i class="icon-ban-circle icon-white"></i></button>
  </span>