HTML documents can be created by any simple word processor such as Windows Notepad or even the DOS editor. The key features of an HTML document are special characters, known as elements, embedded in the document text. The elements control the formatting, page layout, and hypertext linking displayed by the browser. Web browsers interpret these elements as commands to print in bold or italics, insert a picture, download a sound file, etc. Each element is a series of characters enclosed in pointy brackets .
Most elements appear in pairs called starting and ending elements.
Basic HTML Elements Minimum Elements Headings Fonts Style Paragraphs Lists Clickable Links Images HTML is case insensitive and format insensitive.