Why do webpage programs require all the 3 languages to be used, Javascript css and html ?

Question

I'm quite new to programming, so all the programs I studied here in sololearn that's related to web frequently use these 3 languages without fail and I don't understand the necessity

My guess was that html is for base, css to design and Javascript for action although I don't know if that's how it is
And also I would really appreciate if someone told me how to integrate all 3 of these and make a webpage or redirect me to some good yt video about this or even some programs here to better understand these

Answer 1

Html is used for web structure, css for design, and js for action/logic...
Css and js is conected inside html document. By linking files (on SoloLearn this is done on server, so we can use its playground)
You can check this documentation to learn more or look on internet for linking css and js to html.
https://www.w3schools.com/

Answer 2

Thanks a bunch mate that was really helpful