Is HTML the only language required to create a website?

Answer 1

https://code.sololearn.com/WavQRXdt2XI7/?ref=app

Answer 2

Yeah, if you want to create a very simple website. You can also use XML in place of HTML.

Answer 3

Moreless, yes the html is the main and you can create a page. But probaly your page will be ugly and do nothing.

Css add style for page, color, fonts, width....

JavaScript add interativity, if click on button do something, move things...

p.s.: you can write css and javascript inside html file.