How to override jdButton with own class

[rpreusser]

Hi there,

I'm new to Downloads and like to say I'd like it really a lot - great job!

Today I've tried to override the jdbutton class used in the {url_download} variable. 

My aim is to use the button-class from my template in the "download / layout with 1 line" so the buttons in the download list use the class of my template. 

Does anyone have an idea how I can achieve that?
(ideally without copying my template CSS content into the custom.css from jDownloads).

Thanks in advance
Ralf