Hi there, I’ve checked through previous forum requests and this has been requested previously, the Developer team are currently looking into the possibilities of including this for a future update.

Currently it doesn’t look like you’ll be able to do this using css. If you’re confident with php you could edit the widget php file and add the ‘add _blank’ target command to see if that takes affect, as you would with standard HTML.

If your require further help in editing the core files then I’d suggest contact ing http://www.themecustomizers.com/ who may be able to come up with a custom suggestion or widget for you.