What is a web page?
A web page is a file on a server that can be accessed by someone via the internet. Generally this file is written in HTML and includes text, images or other media, and links to other web pages.
How does a web page work?
A web page differs from a website. A website is made up of multiple web pages, at the bare minimum an index page (more often called a home page). Each web page is stored as a single file on a web server, though it may integrate content from multiple sources.
Besides HTML, web pages can include code written in PHP, ASP, and Perl. Web page design, formatting, and style is usually governed by a separate CSS file.