HTML, or Hypertext Markup Language, is a markup language used for creating web pages and applications. HTML defines the structure and content of a web page using a series of elements and tags, which are used to describe the various components of the page, such as text, images, links, and multimedia.
Here are some fundamental concepts in HTML:
Tags: HTML tags are used to define elements on a web page. They are enclosed in angle brackets and can be used to define headings, paragraphs, images, links, lists, and other elements.
Attributes: HTML attributes are used to provide additional information about an element. They are added to the opening tag of an element and can be used to specify properties such as the size, color, and alignment of text, as well as the source and alt text of an image.
Structure: HTML pages are structured using a hierarchy of elements. The top-level element is the <html> element, which contains the <head> and <body> elements. The <head> element contains metadata about the page, such as the title and description, while the <body> element contains the main content of the page.
Semantics: HTML provides a set of semantic elements that describe the content of a web page. For example, the <header> element is used to define the top section of a page, while the <nav> element is used to define a navigation menu.
Accessibility: HTML also provides accessibility features that allow web pages to be more easily accessed by people with disabilities. These features include using appropriate semantic elements, adding alt text to images, and providing captions for multimedia content.
Overall, HTML is a foundational technology for web development and plays a crucial role in defining the structure and content of web pages and applications.