this. I am very ashamed to see the demo, of the subject. At present, my daily "labor" is: cut the picture, to the interface. Cycle on (I suspect I'm a fake front end).
but in the project experience, I still occasionally encounter some dynamic effect requirements, and in most cases (this is based on the difficulty of realizing the dynamic effect), I write casually by myself, and add plug-ins when it is complicated and difficult to deal with.
in fact, in the process of solving the problem, there will be questions like this:
in my opinion, how to improve the dynamic effect of the implementation, there can be faster than the introduction of plug-ins or a library? But there is currently no library or plug-in that can handle every project or requirement of your own. So, in my opinion, and the current practice is the same:
combined with your own project needs, Create your own dynamic effect library

first of all, if the product (project) has this dynamic effect, you can only go step by step to achieve
look at your demo. If the js written by css is perfect, it may not be so smooth, and it is comfortable to see these effects.
I think your demo should be implemented in the underlying language

excuse me, how is the subject demo made or used? Can you recommend a tutorial for learning? at present, it is only on writing static pages for the interface and a small number of minimalist special effects, thank you very much!