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Exploring CSS Positioning

Exploring browser variances


From:

Exploring CSS Positioning

with Candyce Mairs

Video: Exploring browser variances

So, what is a browser? I know it seems like a silly question, but when I stop and ask people what a browser is, it's kind of something we use and never think about. But once you start working with CSS positioning, and really building any webpage, you do have to understand what a browser is. So, let's take a look at it. What is a browser and what does it do? Well, the number one job that a browser does is reads webpages. It's actually just software that you install on your computer that does the reading of the webpages and converts what it reads in code into an actual visual display.
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  1. 1m 13s
    1. Welcome
      1m 13s
  2. 33m 20s
    1. Why CSS positioning?
      5m 50s
    2. HTML editors
      3m 18s
    3. Getting set up
      3m 39s
    4. Previewing pages in browsers
      3m 51s
    5. Customizing the HTML editor
      5m 32s
    6. Exploring browser variances
      5m 16s
    7. Browser extensions
      5m 54s
  3. 30m 33s
    1. HTML vs. CSS: Which does what?
      9m 55s
    2. HTML div tags
      4m 57s
    3. CSS properties
      6m 21s
    4. The CSS box model
      9m 20s
  4. 28m 46s
    1. Planning the page layout
      3m 47s
    2. Building the header box
      6m 23s
    3. Positioning with HTML
      3m 36s
    4. Positioning with CSS
      8m 21s
    5. Foreground vs. background content
      6m 39s
  5. 25m 44s
    1. Building the menu box
      5m 7s
    2. Adding the menu links
      4m 58s
    3. Formatting the menu with CSS
      6m 43s
    4. Positioning the menu with CSS
      8m 56s
  6. 21m 42s
    1. Adding the middle column
      6m 29s
    2. Creating a CSS rule for the column
      6m 20s
    3. Adding CSS rules for the column
      8m 53s
  7. 19m 49s
    1. Adding the right column and inserting images
      7m 33s
    2. Completing the right-column content
      4m 18s
    3. Formatting the right column using CSS
      7m 58s
  8. 26m 14s
    1. Understanding the float property
      6m 5s
    2. Applying the floats
      6m 1s
    3. Finishing the floats
      6m 24s
    4. Adding CSS properties to the right column
      7m 44s
  9. 30m 59s
    1. Setting up for background colors
      5m 49s
    2. Adding a footer
      8m 50s
    3. Adding the background colors
      7m 20s
    4. Positioning the footer
      9m 0s
  10. 16m 38s
    1. Comparing the web page to the graphic design
      6m 50s
    2. Adjusting the web page as needed
      4m 25s
    3. Adding the final touches
      5m 23s
  11. 2m 43s
    1. Closing thoughts
      2m 43s

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Exploring CSS Positioning
3h 57m Beginner May 24, 2012

Viewers: in countries Watching now:

CSS enables you to control the look and layout of a web page much more precisely than you could with HTML alone, but it can be time-consuming to learn. In this workshop, expert developer Candyce Mairs makes styling a quick and easy process, walking you through the process of adding content to a web page and using CSS to position that content. Candyce explains CSS positioning concepts like the CSS box model, floats, and clears and demonstrates how HTML and CSS work together to create the look of your web page. By speaking the same language as the browser, you can learn to work with the browser to place content accurately and easily.

Topics include:
  • Previewing pages in browsers
  • Customizing the HTML editor
  • HTML vs. CSS: which does what?
  • Building the header area
  • Adding the navigation menu
  • Positioning using a float
  • Adding background colors and images
  • Comparing the web page to the graphic design
Subjects:
Web Web Design video2brain
Software:
CSS
Author:
Candyce Mairs

Exploring browser variances

So, what is a browser? I know it seems like a silly question, but when I stop and ask people what a browser is, it's kind of something we use and never think about. But once you start working with CSS positioning, and really building any webpage, you do have to understand what a browser is. So, let's take a look at it. What is a browser and what does it do? Well, the number one job that a browser does is reads webpages. It's actually just software that you install on your computer that does the reading of the webpages and converts what it reads in code into an actual visual display.

So that's basically, what a browser does. Without a browser we could not view the web. All we would see, is coding. So browsers are very important. So why do we care about these browsers? Why do we need to know any of this information? Well, because a browser is used to view your web pages, and users have a choice of which ones to use. Browsers are not all the same. In other words, the Safari browser is not an exact duplicate of Internet Explorer or Firefox or Chrome. We do have to care about it, because they aren't all the same. They can change our web pages when they go to display the visual look of the page.

So that is why we care about the browser. It's important to test in your users' browsers. So you can see exactly what they will see on their system. So you have to find out what browsers a majority of your users of your website are using, and if you don't have a present website, then it's even more difficult to understand what they plan on using as far as browsers are concerned. Because you certainly want to correct any issues they might see in their particular browser.

So you do that as you create the page. Now why are browsers different? Well let's take a look at the anatomy of a browser. Because it's not just a single piece of software. A browser has multiple parts so the first part reads the HTML piece and that is the HTML parser. So any of the tags with the angle brackets on each side of them are read by HTML specifically. CSS on the other hand, and this is what CSS rules would look like right here.

This is a CSS rule. This is a second CSS rule. So you can see we have a set of brackets. Those CSS rules are read by the CSS interpreter within the browser and the interpreters are the pieces that tend to be slightly different from one another across the various browsers. Now this course does not address anything with regards to JavasScript. But there is a JavaScript interpreter built into the browswer as well.

So it's not just HTML and CSS that the browswer contains. You should be aware that the browser also contains a JavaScript interpreter. And this is an example line of JavaScript code that will pop up a message for the user saying, hello there. And that particular line of code would be read by the Javascript interpreter. So, each of these parts of the browser have their own little pieces that read and work with those pieces. So you put it all together and that's your browse software.

So, there are different pieces to a browser the interpreters can read the pages differently. So an interpreter for CSS or JavaScript in one browser is not identical to an interpreter in another browser. So those slightly different ways of interpreting the code can really change how the code looks once it gets to design view in the browser itself from a user's standpoint. In other words, the user looks at the page and it can look different.

So make sure you test as you build your particular web pages especially when you get into the CSS positioning side. People tend not to be as concerned about previewing in browsers when you're just working in HTML or you're just doing the formatting side of CSS. Because those pieces of the browser don't tend to have as much variance. So just make sure as soon as you get into working with positioning and get deep into the CSS piece.

Or the JavaScript on a webpage you really must be testing as you build. So that is the anatomy of a browser and what makes those browsers different from one another that we need to pay attention to as a web page creator.

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Exploring CSS Positioning 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. For updated training, check out CSS: Page Layouts in the lynda.com Online Training Library.


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