25

In the next two chapters we provide an introduction to the core languages

used for writing web pages: HTML and CSS. The HTML language is used for

specifying the structure of a document. It is used to divide the content into

paragraphs, headers, tables, images, movies, hyperlinks in such a way that the

browser can then present the page content to the user either visually (the usual

way), or aurally (using webpage readers), or even tactilely (using braille readers).

The CSS language is used for specifying visual, auditory, and/or tactile style. It

allows one to change the appearance, sound, or feeling of any paragraph, header,

table or other web component.