Learn CSS3 Cascading Style Sheets

The internet is a global network of computers, shortened from its original description of inter-networking. Did you know it was developed as part of a computer science mission launched by President Eisenhower in 1958 in response to the launch of the Sputnik satellite?

The initial four inter-networked computers were the original internet, and on 6th August 1991, Tim Berners-Lee launched the world's first website http:/info.cern.ch; this website explained the concept of the world wide web, and provided users with information on how to build their own websites.

In order for websites to understand each other, a language that could easily share data through a network of computers, but that was also easily read by humans, was needed. Tim Berners-Lee created this language, Hypertext Markup Language, which describes web pages using ordinary text; it's easy to teach yourself HTML!

The history of HTML

There have been five versions of HTML, though the current version bears little resemblance to the original due to the technological advancements since its launch.

1991 - HTML 1.0 was the first version to be released, in the same year as the world wide web; it was merely a way of getting text onto the web and included just 20 HTML elements.

1994 - HTML 2.0 included the original specifications, but there were a number of additions to the language.

HTML 3.0 included a number of new and improved features; unfortunately, the browsers in use at that time were slow in implementing the changes, and only did so on a selective basis. This was a large scale change which did not launch effectively, and was abandoned.

The lesson learned from HTML 3.0 was that improvements from that time were designed on a modular basis, meaning that they could be added in stages; the browsers found this much easier to update.

The evolution of the internet in its infancy found a number of browsers having specific tags, and the need for a standard approach was recognized. A consortium known as W3C (world wide web consortium) was founded by Tim Berners-Lee in 1994 to standardize the language and to oversee ongoing development.

1997 - HTML 3.2 was a pared down and tidied up version of the existing standards in place, and was developed in liaison with the big browser providers at that time, Netscape and Microsoft.

1998 - HTML 4.0 was adopted and included a number of changes from the abandoned version 3.2. It was developed in conjunction with W3C, and focused with a particular focus on international standard setting. Browser adoption was not applied consistently, and a few tweaks were made, with 4.0.1 the final version.

2014 - HTML 5.0 is the current version and was adopted in October 2014. This is a much more advanced version, and has been designed to be worked with for at least ten years. It is a comprehensive set of standards outlining how web pages work.

There are over 100 elements to CSS3, and some of the notable features of CSS3 are listed below.

CSS3 Features:
Document The doctype tells the browser what markup language the page is written in, and should be on the first line of each HTML page; previously there were a number to choose from which caused confusion and conflict, but now there is only one - <!doctype html>
Support All of the major browsers support CSS3; this includes Internet Explorer, Google, Chrome, Safari, Opera and Firefox.
Canvas This is a rectangle on your web page that allows you to draw anything you want using Javascript. CSS3 allows you to define how big the rectangle is, what should be in it and how it should look and behave.
Geolocation You can now share your location with trusted web sites via Javascript; due to privacy concerns, sharing this information must always be optional to the user.
Storage CSS3 now provides storage space on the user, which lasts longer than a page refresh and, unlike cookies, isn't transmitted to the server.
Offline You can now work on your web page offline, storing data locally during this time, and synchronizing next time you're are online.
Forms A form is part of a web page that allows a user to enter data that is sent to a server for processing. Forms have been significantly upgraded by HTML, including determining where the data entry will start without having to navigate there.
Semantics CSS3 has made existing markup shorter, but has also provided a number of new semantic elements, including specifically identifying a section, navigational links, articles, headings, footers.
Multimedia You previously needed a third party plugin (such as QuickTime, RealPlayer, Flash) to include multimedia in a page; this can now be embedded in a page using CSS3.
Styling Cascading Style Sheets (CSS3) is a style sheet language, incorporated into CSS3 for the express purpose of describing the look and formatting of a document written in HTML.
Javascript This is a programming language used to create interactive effects within web browsers, and is the most popular programming language in the world. Standards for its use have been incorporated into CSS3.

CSS3 is not just an updated version of HTML. The standard's aims are to keep the language simple and the code easy to read and maintain, and to accommodate dynamic content; all of this whilst relying on CSS3 (cascading style sheets) for styling.

If you are interested in learning how to make a website, use vcSlate to start with CSS3. Don't worry, our training makes learning the various technologies easy; we provide comprehensive support to ensure any questions you have about building and maintaining websites get answered promptly.


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