[Plugin: Jetpack Subscriptions] – Edit specific widget on the page.

Hi,
I am trying unsuccessfull to edit the css of one specific subscriptions widget on my page. I have the widget displayed two times: in sidebar and in footer. I have edited #subscription-email and #subscription-submit to suit my website sidebar, but now I can’t target the one widget in the footer. I’ve even tried the full path from Firebug without any luck.
The id looks like “subscribe-blog-blog_subscription-14”.
Any tips? Many thanks.