Improved mobile interface with simple css changes

[Noahkoole]

Have improved the interface for mobile by changing the layout of the buttons on smaller screen sizes

[JJCUBER]

A lot seems to get changed, so I will take a closer look tomorrow. Thank you for your contribution!

At first glance, I notice a removal of some portions of the css which were required to make html-to-image properly generate the image without incorrect colors/issues on specific devices. Unfortunately, I do not recall which devices are impacted by this, so I will look back through some of my past private commits to hopefully find this out (and test the respective devices).

(Also note that certain things were only issues [such as CORS issues] when hosting through github pages, as opposed to locally.)

One other thing to note is that I found this odd quirk for certain iOS devices where there is an extreme input delay if the font size/scale of things isn't large enough (along with issues with scrolling and zooming in if the font size of input fields aren't large enough).