Behind the scenes, in the HTML code, the headline is wrapped in an H1 tag. This page has a headline and several sub-headings to break up the copy into sections. Those sub-headings use H2 tags, the ...

In addition to executing code embedded in HTML, it's also possible to add a code editor directly into an HTML page using the py-repl tag so that you can input code and execute it, as shown below.

How to See the HTML Code of a Web Site. HyperText Markup Language is a language used to create pages on the Web. Web browsers interpret the language and display the page as instructed by the HTML.