How do you make white background of new data frame transparent

Discussion created by oldspook on Jan 30, 2014
Latest reply on Jan 31, 2014 by oldspook
I have clipped (to a ellipse shape) and enlarged a portion of a map to show detail, by using a new data frame layer.  All looks well on the layout view, but when exported (to pdf, but I note it is the same for any export) the clip is there but surrounded by the remainder of the frame obscuring the layer below.  I realise you can change this frame background colour - but is there any way of making it transparent?  or have I gone about the whole exercise the wrong way?