Problem with font color of edd checkout

Hi,

i have the Easy digital downloads plugin on a hp and on the checkout page the elements title ant the Number is in white font color. so on the white background you can not read it. If you mark it you can see it.
(Before you have to put an item in the cart.)

I this this code in quick css but it had no effect:

#edd_checkout_cart_item_title {
    color: #808080;
}

#edd_cart_actions {
    color: #808080; 
}

Could you please help me out with this issue.

Thanks Simon