Easy-to-follow video tutorials help you learn software, creative, and business skills.Become a member

Sectioning roots

From: HTML5: Structure, Syntax, and Semantics

Video: Sectioning roots

We are almost done with exploring how HTML5 documents are structured. Now so far, we've covered the outline algorithm, HTML5's four sectional elements, and how headings can be used to title sections and create implicit sections of their own. Now there is, however, one last sectioning element left to discuss, and that is sectioning roots. Sectioning roots contain their own internal outline, but that outline, no matter how complex it is, is not added to any ancestor or parent element's outline.

Sectioning roots

We are almost done with exploring how HTML5 documents are structured. Now so far, we've covered the outline algorithm, HTML5's four sectional elements, and how headings can be used to title sections and create implicit sections of their own. Now there is, however, one last sectioning element left to discuss, and that is sectioning roots. Sectioning roots contain their own internal outline, but that outline, no matter how complex it is, is not added to any ancestor or parent element's outline.

Now essentially, the contents of section roots are hidden from the rest of its parent's element's outline. Now, sectioning root elements are blockquote, details, fieldset, figure, and td, or table depth. Now, the body element is also considered a sectioning root, which could be extremely important if you're merging page content together from multiple pages. So let's take a look at how they work. So here I am again in the HTML5 Outliner, and again, I have saved you the torture of watching me type code. So if you want to do this along with me, once again go ahead and pause your video, go ahead and enter in the code you see here, and start it back when you are done.

Okay, so examining the structure of what we have here inside our Explore California page, we have a single article, and that article contains the Cycle California bike reviews. In addition to the article text, we have two bikes that we are reviewing currently: the Haro Flightline Comp and the Giant Talon. And we also have this other heading right here that says, "This bike is totally rad!! At least that's what everyone says." Now obviously that's a quote where somebody is talking about the Haro Flightline Comp bike, but if we outline this, we can see that that quote is added to the outline.

Now, the obvious solution for that, don't use a heading. But what if you did want to structure it that way? You're certainly within your own rights to do that. Well, remember our sectioning root tags. Remember our sectioning root elements. So this is actually perfect for a blockquote. So what I am going to do is go in and I am going to wrap that heading 3 tag in a blockquote element. And again, I am going to grab the paragraph as well because that's part of the quote, and then we'll go ahead and finish that up. So we're essentially wrapping the quote, which again is with the heading 3 tag on the paragraph as well.

Now when I outline this, as if by magic, it goes away. Now, it's being hidden from the document structure because it's in the blockquote tag, and that essentially means that blockquote has its own internal structure that isn't added to the parent outline. So it has its own outline, and if we could target just that particular element, you would physically see that outline. Now keep in mind that the purpose of these sectioning root elements isn't simply to hide things from the document outline. It is a nice byproduct. It's nice it is working for us. But if you think about which of those elements are sectioning roots, like the blockquote, body, details, fieldset, figure, and td, you know, it simply makes sense to separate their internal outline from any preceding parent outline.

Now, those elements feature content that's self-contained and whose internal structure could really be harmful to the understanding of the overall document outline of who's added to it. So I think it's important to understand how these sectioning roots function, so that when you're planning your document structure, you don't have any nasty surprises a little bit later on when your outlines are generated.

Show transcript

This video is part of

Image for HTML5: Structure, Syntax, and Semantics
HTML5: Structure, Syntax, and Semantics

46 video lessons · 36455 viewers

James Williamson
Author

 
Expand all | Collapse all
  1. 2m 20s
    1. Welcome
      48s
    2. Using the exercise files
      1m 32s
  2. 18m 41s
    1. A brief overview of HTML5
      3m 57s
    2. What's in the HTML5 specification?
      8m 17s
    3. Why do we need new structural elements?
      6m 27s
  3. 50m 33s
    1. Defining HTML5 documents
      5m 5s
    2. HTML5 syntax
      9m 14s
    3. The header element
      5m 22s
    4. The nav element
      4m 55s
    5. The section element
      4m 51s
    6. The article element
      4m 48s
    7. The aside element
      4m 13s
    8. The footer element
      4m 17s
    9. Content model overview
      7m 48s
  4. 35m 28s
    1. Understanding the outline algorithm
      3m 17s
    2. Creating document sections
      8m 25s
    3. Using headings properly
      9m 1s
    4. Using hgroup to override sectioning
      4m 17s
    5. Properly nesting structure
      7m 17s
    6. Sectioning roots
      3m 11s
  5. 58m 30s
    1. Organizing content
      4m 41s
    2. Planning document structure
      5m 47s
    3. Choosing the right structural element
      4m 43s
    4. Checking document outlines
      5m 27s
    5. Coding initial page structure
      5m 28s
    6. Using class and ID attributes
      5m 31s
    7. Structuring headers
      13m 13s
    8. Building navigation
      7m 1s
    9. Structuring footers
      6m 39s
  6. 1h 27m
    1. Working with figure and figcaption
      7m 12s
    2. Grouping content with asides
      3m 46s
    3. Using divs in HTML5
      5m 0s
    4. Working with lists in HTML5
      7m 10s
    5. The return of bold and italic
      5m 52s
    6. Citing works semantically
      6m 32s
    7. Using the address element
      5m 24s
    8. Using the small element
      4m 24s
    9. Using the mark element
      5m 16s
    10. Working with date and time
      11m 55s
    11. Creating block-level links
      8m 53s
    12. Understanding link relationships
      9m 28s
    13. Defining link relationships
      6m 23s
  7. 17m 22s
    1. Current browser support
      7m 38s
    2. Ensuring block-level display
      4m 3s
    3. Adding support for elements in older browsers
      5m 41s
  8. 3m 46s
    1. Additional Resources
      3m 46s

Start learning today

Get unlimited access to all courses for just $25/month.

Become a member
Sometimes @lynda teaches me how to use a program and sometimes Lynda.com changes my life forever. @JosefShutter
@lynda lynda.com is an absolute life saver when it comes to learning todays software. Definitely recommend it! #higherlearning @Michael_Caraway
@lynda The best thing online! Your database of courses is great! To the mark and very helpful. Thanks! @ru22more
Got to create something yesterday I never thought I could do. #thanks @lynda @Ngventurella
I really do love @lynda as a learning platform. Never stop learning and developing, it’s probably our greatest gift as a species! @soundslikedavid
@lynda just subscribed to lynda.com all I can say its brilliant join now trust me @ButchSamurai
@lynda is an awesome resource. The membership is priceless if you take advantage of it. @diabetic_techie
One of the best decision I made this year. Buy a 1yr subscription to @lynda @cybercaptive
guys lynda.com (@lynda) is the best. So far I’ve learned Java, principles of OO programming, and now learning about MS project @lucasmitchell
Signed back up to @lynda dot com. I’ve missed it!! Proper geeking out right now! #timetolearn #geek @JayGodbold
Share a link to this course

What are exercise files?

Exercise files are the same files the author uses in the course. Save time by downloading the author's files instead of setting up your own files, and learn by following along with the instructor.

Can I take this course without the exercise files?

Yes! If you decide you would like the exercise files later, you can upgrade to a premium account any time.

Become a member Download sample files See plans and pricing

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.


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.

Join now "Already a member? Log in

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 HTML5: Structure, Syntax, and Semantics.

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


OK
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
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.

Are you sure you want to delete this note?

No

Your file was successfully uploaded.

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
Terms and conditions of use

We've updated our terms and conditions (now called terms of service).Go
Review and accept our updated terms of service.