I am an instructor embedding Google Slides that have been published to the web. 

I want them to fill a Page and resize responsively. I already have this part set up in the code and have removed the bottom navigation bar from the slideshow. I notice that my edits to the code disappear once I press save, so it's hard for me to tell if my slides are actually going to behave responsively on other devices. This is issue #1. 

My 2nd issue is that I cannot get the slideshow to fill up the page horizontally (the gap shown in green in my image) 3rd, it is showing a single black line on the right side of the slides (circled in yellow). How can I correct these issues?