When replacing pictures, here are a few helpful notes on sizes that work well for areas of the template.
(1) Team Images – these images can be any shape that suits your needs. You will find that it works best to have all images that are similar in shape and size to retain the consistency & shape of the slider. I have chosen square images for my demo
(2) Background Images – almost any image (shape/size) will work in these areas. A larger image (at least 1500px wide) will offer the best quality when it is stretched on bigger screens.