YO ERIN! Desktop slides: 1366x816h
Mobile slides: 768x768h - TEXT: no smaller than 24px - you can hit this page on your phone to see a sample of font sizes.
All images below including closing image only require Desktop size listed, no mobile - yay.
The 768x472 images don't appear that wide on desktop - the size is optimized for tablet.
Also, the Font-Size: 48px - that's just a guide to let you know what size your header appeared at 768w.
BOTTOM IMAGE CONTAINS GRAPHIC - so it aligns properly.
SIMMS TEAM: products and links below are FPO - went with Sentence case on text to make it easier to read and so it didn't take up a whole page on mobile.