Use a web presentation service, like reveal.js (mentioned by Elijay) or similar service or write some HTML/CSS (daneden.github.io/animate.css/ can be used for example).
Line things up. Little things, big things. If it starts to look boring, break this rule a bit.
Be consistent (keep things same-y, where appropriate).
Apple products over the years have generally had better visual rendering than PC. From postscript, anti alias fonts to retina to Safari's (webkit) CSS rendering to color gamuts. This can be argued but in the consumer space it is true mostly (not anymore in many areas).
For further actions, you may consider blocking this person and/or reporting abuse
We're a place where coders share, stay up-to-date and grow their careers.
Use a web presentation service, like reveal.js (mentioned by Elijay) or similar service or write some HTML/CSS (daneden.github.io/animate.css/ can be used for example).
Put less on every slide. Add more whitespace.
Use high quality visuals (unsplash.com undraw.com is good for free).
Use nice typography (fonts). Lots out there.
Use a strong & memorable style.
Pick nice colors (color.adobe.com).
Line things up. Little things, big things. If it starts to look boring, break this rule a bit.
Be consistent (keep things same-y, where appropriate).
Apple products over the years have generally had better visual rendering than PC. From postscript, anti alias fonts to retina to Safari's (webkit) CSS rendering to color gamuts. This can be argued but in the consumer space it is true mostly (not anymore in many areas).