Start learning with our library of video tutorials taught by experts. Get started

CSS3 First Look
Watching:

What is CSS3?


From:

CSS3 First Look

with James Williamson

Video: What is CSS3?

So before we get started I think it's important to answer a very basic question. What exactly is the CSS3? It sounds like a very easy question to answer. You can just say it's the latest CSS specification and the followup to the 2.1 specification. Except for the fact that it's really not. In fact, there is actually no such thing as the CSS3 specification at all, which could make this a pretty short title. And before we pack it all up and go home, let's take a brief look at the history of CSS, which will help us understand what CSS3 is really all about.
Expand all | Collapse all
  1. 3m 5s
    1. Welcome
      1m 20s
    2. Using the exercise files
      1m 45s
  2. 31m 30s
    1. What is CSS3?
      5m 26s
    2. The current status of CSS3
      3m 35s
    3. An overview of CSS3 capabilities
      2m 24s
    4. Can you use CSS3 now?
      5m 31s
    5. Detecting support for CSS3
      9m 0s
    6. Understanding vendor prefixes
      5m 34s
  3. 1h 9m
    1. An overview of child and sibling selectors
      3m 11s
    2. Using child and sibling selectors
      7m 17s
    3. An overview of attribute selectors
      3m 19s
    4. Using attribute selectors
      8m 32s
    5. Pseudo-class UI selectors
      5m 56s
    6. Negation pseudo-class selectors
      6m 48s
    7. Target pseudo-class selectors
      5m 39s
    8. Structural selectors
      3m 58s
    9. Nth-child selector syntax
      10m 0s
    10. First, last, and only structural selectors
      5m 39s
    11. Using structural selectors to write more efficient code
      8m 52s
  4. 45m 28s
    1. Color formats in CSS3
      7m 9s
    2. Transparency in CSS3
      9m 10s
    3. CSS3 gradients
      4m 11s
    4. Creating linear gradients
      13m 57s
    5. Creating radial gradients
      11m 1s
  5. 49m 8s
    1. Working with web fonts
      6m 38s
    2. @font-face syntax
      4m 52s
    3. Downloading sample fonts
      6m 5s
    4. Writing @font-face declarations
      7m 57s
    5. Using web fonts
      6m 42s
    6. Using text shadows
      7m 14s
    7. Creating multi-column text
      9m 40s
  6. 50m 55s
    1. An overview of the flexible box model
      4m 42s
    2. Controlling box orientation
      5m 2s
    3. Setting element flexibility
      12m 59s
    4. Distributing boxes
      7m 54s
    5. Controlling box alignment
      12m 38s
    6. Working with box-sizing
      7m 40s
  7. 1h 5m
    1. Using border-radius
      6m 20s
    2. Creating custom rounded corners
      10m 21s
    3. Understanding border images
      5m 15s
    4. Using border images
      8m 52s
    5. Creating box shadows
      8m 58s
    6. CSS3 backgrounds
      4m 55s
    7. Controlling background size
      8m 46s
    8. Creating multiple background images
      6m 4s
    9. Using background-origin
      3m 18s
    10. Clipping background content
      3m 2s
  8. 40m 8s
    1. An overview of CSS3 2D transforms
      4m 26s
    2. Using 2D transforms
      8m 16s
    3. Setting transform origins
      5m 24s
    4. An overview of CSS3 transitions
      5m 0s
    5. Animating CSS properties
      6m 12s
    6. Using easing in animations
      5m 41s
    7. An overview of 3D transforms
      5m 9s
  9. 37m 56s
    1. Understanding media queries
      6m 18s
    2. Strategies for targeting multiple devices
      6m 4s
    3. Writing styles for target screen sizes
      12m 11s
    4. Deploying styles through media queries
      3m 55s
    5. Basing media queries on page orientation
      2m 24s
    6. Targeting media queries for iOS devices
      7m 4s
  10. 1m 6s
    1. Goodbye
      1m 6s

Watch this entire course now—plus get access to every course in the library. Each course includes high-quality videos taught by expert instructors.

Become a member
Please wait...
CSS3 First Look
6h 34m Appropriate for all Nov 29, 2010

Viewers: in countries Watching now:

In CSS3 First Look, staff author James Williamson provides an in-depth introduction to the newest CSS standard, detailing its modular format, history, and current level of browser support, while also demonstrating its capabilities and applications. The course includes tutorials on using new selectors, modifying typography and color, working with the box model, and understanding media queries. Exercise files accompany the course.

Topics include:
  • Understanding the history of CSS3
  • Working with the new selectors
  • Adding transparency and gradients
  • Specifying web fonts with @font-face
  • Understanding the advances to page layout
  • Looking at CSS3 box model capabilities
  • Using 2D and 3D transforms
  • Understanding media queries
Subject:
Web
Software:
CSS
Author:
James Williamson

What is CSS3?

So before we get started I think it's important to answer a very basic question. What exactly is the CSS3? It sounds like a very easy question to answer. You can just say it's the latest CSS specification and the followup to the 2.1 specification. Except for the fact that it's really not. In fact, there is actually no such thing as the CSS3 specification at all, which could make this a pretty short title. And before we pack it all up and go home, let's take a brief look at the history of CSS, which will help us understand what CSS3 is really all about.

The CSS 1.0 specification was published in December of 1996. It was originally designed to help authors control the presentation of HTML. In fact, one of its earliest names was CHSS or Cascading HTML Style Sheets. Now thankfully, the H was removed, making it a easier to say and much more representative as a style sheet language that can be used for multiple markup languages, not just HTML. The 1.0 specification was quickly followed up by the CSS 2.0 specification, which was released as a recommendation in 1998.

Like any new standard CSS has had its share of growing pains. CSS 1 and 2 were released at a very volatile time in the development of web browsers. In the late 90s, browser manufacturers were not as interested in ensuring that their browsers were standards compliant. In many cases, browsers would introduce their own proprietary way of dealing with presentation or just offer uneven support for CSS. Now couple that with the fact that the CSS 2.0 specification continue to be updated, even though it was a published recommendation, and you had a real problem with CSS gaining traction.

In fact, to this day not a single browser fully implements the 2.0 specification. It was this environment that prompted the W3C to start work on revising the 2.0 specification. Now this revision, dubbed CSS 2.1, was issued as a candidate recommendation in 2004 and it's largely what people are talking about when they discuss CSS. Support for web standards continued to grow during the development of CSS 2.1 and browser manufactures began to get really serious about implementing the standard.

For the most part, modern browsers offer full implementation of the 2.1 standard. Now, you will notice I said for the most part. Because of uneven implementation, the W3C pulled the 2.1 specification back to Working Draft status in 2005 to even out the bugs and make the standard a bit stricter. Now it was returned to Candidate Recommendation in 2007 where it remains as of this recording. So let's try to summarize. The 2.0 specification was released and never fully implemented and the 2.1 revision was released, pulled back to Working Draft, and then released again as a Candidate Recommendation over the course of about six years.

Now saner minds might reason that the W3C should get one standard release and implement it before moving on to the next. But that line of thinking ignores the rapid evolution of the web. During the course of the development of CSS some very important changes have occurred in the way that websites are developed and consumed. The rise of online applications and mobile devices are just two of the changes that the original CSS specifications just weren't designed to address. With that in mind, the W3C is taking a very deliberate and in my opinion a very smart approach to developing the next generation of style sheet standards.

Although work on the CSS level 3 standard has been going on since at least 2001, the days of a large singular standards document that defines CSS is over. If the past history of CSS has taught us anything, it's that trying to get such an overwhelmingly large document through development and review and then publish it as a recommendation is extremely difficult. Because of this the W3C has decided to modularize the CSS standard. What is that mean? Well, essentially, it's been split up into various parts.

CSS selectors for example are defined in their own standard, while backgrounds and borders are defined in another. This approach allows the working group to have much more flexibility over the evolution of CSS. Individual standards can be developed based on different priority levels when needed and it's much easier to edit or add modules as the needs of web content changes. So, in fact, there is no CSS3 specification. There are simply individual specifications, some with a level 3 label, that are based on and meant to extend the 2.1 core specification.

All the future editions to CSS will either update existing modules or add new ones to the mix. Now while this is a smart way to make sure that evolution of CSS responds to the web community's needs, it can make it difficult to keep track of all of it. In our next movie we will do that by discussing the current state of CSS3 and by showing you how you can keep up with the development of the different modules.

Find answers to the most frequently asked questions about CSS3 First Look.


Expand all | Collapse all
Please wait...
Q: I'm following along with the video "Transparency in CSS3".  James shows us how to achieve transparency in Internet Explorer by going to Kimili.com and entering a HSLA value to generate code for transparency.

Here that code:

background: transparent;-ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#BF0E0C0B,endColorstr=#BF0E0C0B)"; /* IE8 */
filter: progid:DXImageTransform.Microsoft.gradient(startColorstr=#BF0E0C0B,endColorstr=#BF0E0C0B); /* IE6 & 7 */ zoom: 1;

When this code is added to my HTML file it removes transparency on browsers that do in fact support it. So I'm left with NO transparency. Why?
A: The problem is in the filter code. If the IE background is called last, the first "transparent" declaration will remove all previous colors, regardless of browser. To resolve this, place the rule inside a conditional comment for IE or remove the "transparent" declaration at the front of the rule.
Share a link to this course
Please wait... Please wait...
Upgrade to get access to exercise files.

Exercise files video

How to use exercise files.

Learn by watching, listening, and doing, Exercise files are the same files the author uses in the course, so you can download them and follow along Premium memberships include access to all exercise files in the library.
Upgrade now


Exercise files

Exercise files video

How to use exercise files.

For additional information on downloading and using exercise files, watch our instructional video or read the instructions in the FAQ.

This course includes free exercise files, so you can practice while you watch the course. To access all the exercise files in our library, become a Premium Member.

Upgrade now

Are you sure you want to mark all the videos in this course as unwatched?

This will not affect your course history, your reports, or your certificates of completion for this course.


Mark all as unwatched Cancel

Congratulations

You have completed CSS3 First Look.

Return to your organization's learning portal to continue training, or close this page.


OK

Course retiring soon

CSS3 First Look will be retired from the lynda.com library on April 24, 2014. Training videos and exercise files will no longer be available, but the course will still appear in your course history and certificates of completion.


Become a member to add this course to a playlist

Join today and get unlimited access to the entire library of video courses—and create as many playlists as you like.

Get started

Already a member?

Become a member to like this course.

Join today and get unlimited access to the entire library of video courses.

Get started

Already a member?

Exercise files

Learn by watching, listening, and doing! Exercise files are the same files the author uses in the course, so you can download them and follow along. Exercise files are available with all Premium memberships. Learn more

Get started

Already a Premium member?

Exercise files video

How to use exercise files.

Ask a question

Thanks for contacting us.
You’ll hear from our Customer Service team within 24 hours.

Please enter the text shown below:

The classic layout automatically defaults to the latest Flash Player.

To choose a different player, hold the cursor over your name at the top right of any lynda.com page and choose Site preferencesfrom the dropdown menu.

Continue to classic layout Stay on new layout
Welcome to the redesigned course page.

We’ve moved some things around, and now you can



Exercise files

Access exercise files from a button right under the course name.

Mark videos as unwatched

Remove icons showing you already watched videos if you want to start over.

Control your viewing experience

Make the video wide, narrow, full-screen, or pop the player out of the page into its own window.

Interactive transcripts

Click on text in the transcript to jump to that spot in the video. As the video plays, the relevant spot in the transcript will be highlighted.

Thanks for signing up.

We’ll send you a confirmation email shortly.


Sign up and receive emails about lynda.com and our online training library:

Here’s our privacy policy with more details about how we handle your information.

Keep up with news, tips, and latest courses with emails from lynda.com.

Sign up and receive emails about lynda.com and our online training library:

Here’s our privacy policy with more details about how we handle your information.

   
submit Lightbox submit clicked