HTML (Hypertext Markup Language) is a markup language used to create and structure the content of web pages. It consists of a series of tags that define the structure and content of a document. HTML is the backbone of the web, and every website on the internet is built using HTML.
HTML documents consist of a set of elements, such as headings, paragraphs, images, links, and tables. Each element is defined using a tag, which consists of angle brackets surrounding the tag name. Tags can also contain attributes, which provide additional information about the element. For example, the following code defines a heading element with the text "Hello, World!" and an attribute that sets the font size to 20 pixels:
<h1 style="font-size:20px;">Hello, World!</h1>
HTML is a constantly evolving language, and new features are added to it from time to time. The latest version of HTML is HTML5, which includes many new features, such as support for video and audio, canvas elements for drawing graphics, and new semantic elements for better structuring of content.