HTML5 Introduction
What is HTML5?
HTML5 will be the new standard for HTML. The previous version of HTML, HTML 4.01, came in 1999. The web has changed a lot since then. HTML5 is still a work in progress. However, the major browsers support many of the new HTML5 elements and APIs.
Some rules for HTML5 were established:
  • New features should be based on HTML, CSS, DOM, and JavaScript
  • Reduce the need for external plugins (like Flash)
  • Better error handling
  • More markup to replace scripting
  • HTML5 should be device independent
  • The development process should be visible to the public
Some of the most interesting new features in HTML5:
  • The canvas element for 2D drawing
  • The video and audio elements for media playback
  • Support for local storage
  • New content-specific elements, like article, footer, header, nav, section
  • New form controls, like calendar, date, time, email, url, search
 
CSS3 Introduction
CSS3 is completely backwards compatible, so you will not have to change existing designs. Browsers will always support CSS2.
CSS3 Modules:
CSS3 is split up into "modules". The old specification has been split into smaller pieces, and new ones are also added.
Some of the most important CSS3 modules are:
  • Selectors
  • Box Model
  • Backgrounds and Borders
  • Text Effects
  • 2D/3D Transformations
  • Animations
  • Multiple Column Layout
  • User Interface
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