I want to write a web page. Can multiple portals be displayed on one web page at the same time? _html/css_WEB-ITnose

Or this works, I clicked the link to enter the portal, but the navigation of my webpage is still there, or there is a pop-up window in the lower right corner, and there are some buttons to return links in the pop-up window. It can also be understood that for a webpage with a portal navigation, after clicking the link, the portal webpage will be displayed below the navigation instead of jumping. Newbies, just give me some directions, thank you

Reply to the discussion (solution)

Use iframe for pure html
For server-side scripts, just import the public head directly

On the 1st floor of the same building, use the frame iframe

Encapsulate a common header. In the project, this part is done by program.
If it is a static page, each page has the same header, but the currently selected style is different.

The main part of a table page uses iframe to refer to external links

It is not pure HTML, because it also uses a database, so I hope HTML and JSP can be used together. Does anyone have any ideas