HTML includes the content of style and script elements (among many others) and the results of whatever they do.
The combination of all of these direct a browser in how to render a page.
Traditionally, a static site or static page is one whose data can be delivered to the client directly as stored, with no server-side alterations or generation.
This is/was a meaningful distinction because a server that can stream stored data is fundamentally much simpler than one that executes programs. Such a server can run in different contexts, be optimized in different ways, and satisfies constraints that allow further optimizations downstream.
The combination of all of these direct a browser in how to render a page.
Traditionally, a static site or static page is one whose data can be delivered to the client directly as stored, with no server-side alterations or generation.
This is/was a meaningful distinction because a server that can stream stored data is fundamentally much simpler than one that executes programs. Such a server can run in different contexts, be optimized in different ways, and satisfies constraints that allow further optimizations downstream.