How is this site meant to be viewed?
On a computer, primarily. Everything is optimised for a desktop or laptop. Everything is responsive and should be accessible via a mobile device (tablet or phone) but nothing is guaranteed. View it on a bigger screen if you must.
What is the ‘classic site’?
For many years, this domain served as a data repository for me – starting in the pre-‘cloud’ days. I could just upload what I needed and access it at school, work, wherever I needed to. Now that functionality isn’t needed as much, nor is there a need to update everything manually via my desktop. Moving to WordPress as a CMS and updating this way makes more sense. The ‘classic’ site remains, however, at least until I move all the data over… and add data from older iterations of my site(s) as well.