Nowadays, when VR helmets have become part of our reality and Tesla cars fly in space, you can use all the power of browser engines to create truly interactive, cross-platform and stylish presentations, rather than make a set of PPTX pages or, even worse, a PDF document in "illustrative material for explanatory and calculation report" style.
Since 2015, I have been trying to find the optimal presentation format for myself (apart from graduation projects). And now I think I have almost succeeded. It all started with PowerPoint, and ended with web frameworks based on JavaScript.
There are several JavaScript engines which can be used to create cool presentations: Marp, Reveal, landslide, hacker-slides, slidify and others. In some engines, you can use Markdown, some are embedded in an IDE, and some have their own editors. I have tried the first two engines.
As a demonstration, slide examples and video are available.