How to change appearance of Buy Now Button

[rachael_web86]

Hi I was wondering if someone could kindly help me please... If you visit http://www.mochodesigns.co.uk/mothergoose/yummy-mummy.php You can see my 1st Buy Now button is boring grey & the other 3 are just images...

 

I want the boring grey one to look like the buynow.gif image I have temporarily on the other products and have tried to define the button using css in my stylesheet - I have put the following code in my stylesheet.css:

 

#buttonSet .buttonAction button[type=submit] {

background:none;

background-color:#ffffff;

}

And the code for my actual button is:

 

<form name="cart_quantity" action="http://www.mochodesigns.co.uk/mothergoose/product_info.php?products_id=29&action=add_product" method="post">

<div class="buttonSet">

<span class="buttonAction"><input type="hidden" name="products_id" value="30" />

<button type="submit" >Buy Now</button></span>

 

Does anyone know why this css isn't changing the appearance of the grey buy now button?