Restyle the Slides

## Do you have an eye for design?
Help us improve the look of the slide deck.
If you need help, check out the Appendix in the training manual.

Start by locating the slide deck and reviewing the Appendix in the training manual for context. Compare the existing presentation with the requested visual improvement, then define a consistent restyling scope; done should mean the deck has a cohesive, improved look across its slides.

Written by the indexing model from the issue text.