HTML5 is a markup language used for structuring and presenting content on the World Wide Web. It is the fifth and current version of the HTML standard.

The HTML 5.1 Reference provides beginners with a simple introduction to the basics, and experts will find advanced details they need.

In this you will see the following things below.

Table of Contents

1 Introduction
2 Common infrastructure
3 Semantics, structure, and APIs of HTML documents
4 The elements of HTML
5 User interaction
6 Loading Web pages 6.1 Browsing contexts
7 Web application APIs
8 The HTML syntax
9 The XHTML syntax
10 Rendering
11 Obsolete features
12 IANA considerations

You will find all this section offline without any internet connection and lean DB easily anywhere and anytime.