All in all, my project had already become too big again, so I left the videos out until I found a better idea for it. Also, the site is self-scaling again and therefore (to some extent) displayable on different devices. There is no real mobile version yet and my target group is anything but the typical smartphone user. What I know from some conversations, my user tends to oversized monitors or typical heavy " landscape laptops. But since I only have a small amount of data at my disposal that people send to me freely, I can only give a rough guess. Personally I also like it better and that is somehow an important reason for a change. The loading times have improved a lot, because not so many external files have to be loaded anymore. But I still have to optimize small problems in some places. For the framework I chose Skeleton instead of Bootstrap. I wanted to keep the design as simple as possible and if I need more features, I can also add them later on.
There were a lot of changes in the links. I took out almost all Wikipedia articles and preferred to look for original sources. The market dominance of the encyclopedia has become a bit too big for me in the last years and I also have no control over the links within an article. There are too many professionals who rewrite articles for corporations, governments and so on according to a demanded propaganda. My page can only be rewritten by me and with that I have solved the problem. Also Youtube links were completely removed, because the Alligator browser can not display them properly. This is still a big problem, but it has to be solved within the Alligator project and not necessarily the website. I also removed the Instructables links completely, because the cockie messages really annoyed me every time I opened the website. This also applies to any other website that doesn't want to comply with European data protection regulations. You have been excluded from digital inclusion. Your bad luck.