Modifying Voucher's area in shopping-cart.tpl

[MrBaseball34]

In shopping-cart.tpl, I'm trying to make the Add button in the vouchers
fieldset show up next to the Code input with no success.

This code:

{l s='Vouchers'}


{l s='Code:'}
   <input type="text" id="discount_name" name="discount_name" value="{if $discount_name}{$discount_name}{/if}" /> <input type="submit" name="submitDiscount" value="{l s='Add'}" class="button" />

shows correct when viewing source but the add button is still BELOW the code input when rendered, not next to it.
Any ideas as to why?