CSS and HTML When HTML was first created, style properties were defined directly in the code. However, rather than just adding more and more tags to HTML, the W3C introduced Cascading Style Sheets to fill the design void in straight HTML, allowing the Web to become semantic in structure. For example. In HTML, the strong tag does one thing and one thing only: It makes text “stronger,” usually by making it bolder. However, using CSS, you can “redefine” the tag so that it not only makes text bolder, but also displays text in all caps and in a particular font to add more emphasis.

CSS level 2 (CSS2) The CSS2 spec came out in 1998 and is the most widely adopted by browser makers. Level 2 includes all the attributes of the previous two versions, plus an increased emphasis on international accessibility and the capability to specify media specific CSS. In 2006, the W3C published an updated version: CSS Level 2.1, which corrected some errors, clarified a few issues, and included specifications for features that had already been implemented in some browsers. CSS2.1 has effectively replaced CSS2.

Text it is the best system that humans have ever devised for recording complex thoughts. Many people think of text as simply a way to record words, but typography adds a voice to the meaning of the words. Typography affects how text appears by controlling not only the shapes and sizes of the letters used (the font), but also the spaces between letters, words, lines, and paragraphs. Unfortunately, many of the challenges of typography on the Web have come about as a result of a need to circumvent the limitations of the medium.