In the jetpack facebook like box widget, there is no option to hide the like box's border.
The iframe api seems to support show_border=false which hides the border.
could you please add an option to the widget to allow user to turn the border on and off from the widget's UI?
Steps to reproduce:
install likebox widget. note that the frame has a border around it.
edit the iframe src url in object inspector to include "&show_border=false". note that the frame's border is now gone.