How are these dynamic pages made?

how are these high-end WEB pages made now?
http://meizu.com/products/pro6/summary.html
http://moofun.allyes.com/
I know it"s probably H5, I also know some JS, but I don"t seem to be able to do that. I went to W3Cschool to find HTML5"s tutorial http://www.w3school.com.cn/html5/, and I didn"t see this effect in it.
ask the master for advice on how to do it. Where is the detailed tutorial? Is it a tutorial that I can do as much as I do?

the problem is compared with the rookie level. I learned some front-end HTML CSS JS, by myself, but what I made are all the pages of the last era. I can"t do this yet, and I can"t find a detailed tutorial on how to make this kind of page in the process of self-study. I would like to ask God for help. Thank you very much.

Html5 html front-end web

Mar.03,2021

use chrome's console tool to check the tags and styles of these elements, see what they are implemented in, and then learn.

are all made by css3+js

HTML+CSS3+JS

generally use html5+css3+js to achieve

how to write dynamic web pages?

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