slidy | jQuery Slidy - A Transition Plugin | Animation library

I have a simple markdown slideshow I convert to html with pandoc

I just made a slider with the help of this site: https://la-cascade.io/un-carrousel-responsif-en-pur-css/.

it works very well only it is way too big on my site I would really like to provide the modification but I can not do it someone knows how to do it

My CSS:

I am working to create some slides using reveal.js (from within R markdown if it matters). Compared to other frameworks (like ioslides or slidy) there are HUGE margins to the left of the text, as in the graphic below.

I've been trying to edit the css to move the text further to the left but to no avail.

Any ideas?

My css style section is:

I am new to Rmarkdown and plan to use ioslides/slidy/xaringan to do my presentation.

I used to use the beamer to do presentations. In the beamer, I have theorem environment which is designed to mathematics theorems. I want to be able to have that kind of format in ioslides/slidy/xaringan. I know I can use $$...$$ to include latex code and can display equation. However, this is not enough to my needs.

I also know in bookdown one can have theorem environment. But I do not know how to do that in the ioslides/slidy/xaringan output format.

The name 'Router' is defined in the libraries 'package:flutter/src/widgets/router.dart' and 'package:flutter_modular/src/routers/router.dart (via package:flutter_modular/flutter_modular.dart)'.\nTry using 'as prefix' for one of the import directives, or hiding the name from all but one of the imports."

This is my class right now:

I want to make incremental div elements, but pandoc is stripping out the incremental class name from them:

I am using pagedown::chrome_print() to convert slidy presentations created with Rmarkdown to pdf -- it does a better job than saving as PDF from Chrome. However, despite studying the help file, I cannot figure out how to add page numbers. Is there a way to do this?

(Note that pagedown here refers to the R package, not the JavaScript markdown previewer.)

In the following code, I should see 2 slides, the first slide should have title List of items and the second slide should start at Second heading. But I only see one slide after the first page. Where do I misunderstand?

I need to create an auto advancing presentation for a lightning talk. Is there a way to use the \hypersetup{pdfpageduration=n} functionality from Beamer within R Markdown without editing the intermediate .tex file? If possible, I would like to be able to set a different time for each slide. I'm open to solutions that use the html presentation engines (ioslides or Slidy) if this is an easier alternative.