Featured Content Background Image on media phone screen

My website is franciscanfriars.org I recently changed my featured content background image, then returned to the previous one (I am pretty sure), and it behaves differently than it used to. Now, on my phone... It used to show the bottom of the image, now it shows the top... I have selected the option to show the bottom, and it does indeed do that on full size screen AND on tablet... but on phone it is showing the top of the image... so I don't know why... anyway... I would like to show the bottom of the image on my phone too... or maybe even have a different image altogether for the phone (because you really can't see much of the image anyway), or even just the option to go to a solid color for the phone only. Thanks.