Portfolio Masonry on mobile device

Hello.  I am using the Portfolio Masonry view on my homepage just like the homepage - slider demo on the DrupalExp site.   On a mobile device, my images are not resizing to the width of my smartphone device and the title and icons are showing as if they are on a larger device.  I have matched all of my settings against the demo install in the Shoot theme.   Have there been any updates to the theme perhaps?  Any help would be appreciated as it is most difficult to debug on mobile.