How to change Font size in direct bank transfer?

I'm using v1.3.8 and would like to know how to change font size for bank detail in direct bank transfer payment module.

I've tried editing the ".important" section of stylesheet.css and the font size stays the same.

Any help would be appreciated

in /includes/languages/english/modules/payment/dirbank.php
find

 define('MODULE_PAYMENT_DIRBANK_TEXT_DESCRIPTION',  
  '<BR>Please use the following details to transfer your total order value:<br><pre>' .  
  "\nAccount No.:  " . MODULE_PAYMENT_DIRBANK_ACCNUM . 
  "\nBSB Number:   " . MODULE_PAYMENT_DIRBANK_BSB .  
  "\nAccount Name: " . MODULE_PAYMENT_DIRBANK_ACCNAM .  
  "\nBank Name:    " . MODULE_PAYMENT_DIRBANK_BANKNAM . 
  "\nSwift Code:   " . MODULE_PAYMENT_DIRBANK_SWIFT .  
  '</pre><p>Thanks for your order which will ship immediately we receive payment in the above account.');

replace it with

 define('MODULE_PAYMENT_DIRBANK_TEXT_DESCRIPTION', 
  '<BR><font size="2" color="#000000">Please use the following details to transfer your total order value:<br>' .
  "<br>\nBSB Number:<br> " . MODULE_PAYMENT_DIRBANK_BSB .
  "<br>\nAccount No.:<br>  " . MODULE_PAYMENT_DIRBANK_ACCNUM .
  "<br>\nAccount Name:<br> " . MODULE_PAYMENT_DIRBANK_ACCNAM .
  "<br>\nBank Name:  <br>  " . MODULE_PAYMENT_DIRBANK_BANKNAM .
  '</font><p>Thanks for your order which will ship immediately we receive payment in the above account.');

Thank You !!!!! Thank You!!!! Mickyelta...

All sorted.