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Positioning elements: Lab

From: CSS: Page Layouts

Video: Positioning elements: Lab

Controlling positioning is an incredibly important part of CSS layouts, but perhaps not in the way that all new web designers think. Rather than controlling the bulk of the page layout, positioning is typically used to control specific elements within it or to build complex interface components that other positioning methods really aren't well suited for. With that in mind, in this lab we are going to be focusing on tweaking a couple of areas on our desolved.org layout. Go ahead and go into the 04_07 directory, open up the index.htm file from that, and go inside the _css folder and open up main.css.

Positioning elements: Lab

Controlling positioning is an incredibly important part of CSS layouts, but perhaps not in the way that all new web designers think. Rather than controlling the bulk of the page layout, positioning is typically used to control specific elements within it or to build complex interface components that other positioning methods really aren't well suited for. With that in mind, in this lab we are going to be focusing on tweaking a couple of areas on our desolved.org layout. Go ahead and go into the 04_07 directory, open up the index.htm file from that, and go inside the _css folder and open up main.css.

Those are the files that we are going to be working on. So I only have two things in this lab that I need you to do. But before you go, oh wow, only two things, this is going to be a really quick lab, there are two things that are going to take a little bit of time on your part to think through and decide exactly how you want to solve the problems. So it may take a while, even though there are only two tasks. So before we get into the specifics of them, I am going to switch over to my browser, and I'm going to look at the page as it is now and then compare that to the finished version. So currently right now, if I scroll down a little bit, our banner does not look the way that it should.

This paragraph which should be over here on the right-hand side is down below the banner, overlapping it in a weird way. So this is what it should look like. If I go over to desolve.org, in this layout you can see the paragraph is over on this hand side. It's overlaying the image, the height matches, and it's in a place where it lines up with the column below it. So that's one thing that you're going to need to take care of. The second thing, some of you have probably already noticed it. Look at this little bird over here, isn't that cool? As I scroll through the page, the bird stays right there, and of course, that is a link which allows people to follow me on Twitter. So if you want to follow me on Twitter at jameswillweb, you can simply click that link and follow me on Twitter.

It's fun stuff. But it's right down there in position, and you will notice that always stays in exactly the same place. In the current version of the layout, if I go all the way down to the footer, the bird is right there, so we need to move that as well. So going into the specifics of what we need to do, let's go into the main.css and at the very top of the style sheet, I have got the Lab steps here for you. So the first step, in the banner styles section, which is around line 276, you need to modify the styles for the banner and banner paragraph so that its height now that will be the height of the paragraph, matches the banner, and its width matches that of the aside column, so you are going to need to look at those styles and figure out exactly how wide that is.

Now remember to take their current padding into account when you are trying to match up widths. Then use positioning to line up the paragraph with the right edge of the banner so that it appears to line up with the aside column below it. Finally, ensure that the content is not allowed to flow outside of the banner div tags. So there is a couple of things we need to do here. It might be second nature to you after the floats chapter to look at the finished version of this and say to yourself, well, I'll just float this over here. But in this case, instead of floating, positioning is a little bit better suited for this task, and I want you to tackle it using positioning.

Now the second task for you is to go down to the footer, locating the Twitter link. Now using the class attribute, write a selector at around line 691. So you are going to have to go into the HTML code, locate the Twitter link, and look at the class attribute. So using that, you are going to write a selector that fixes the position of the Twitter icon to always be 20% away from the bottom edge of the screen, and snug up against the left edge of the screen. Now, okay, so yeah, that's only two things, but trust me, you've got a lot to think about.

Now determining how to size and positioning the banner paragraph may take a little while, and if you are having trouble with it, don't get frustrated. Just keep trying and feel free to sneak a peak at the finished files if you need a little help. And once you are finished, be sure to check out the solutions movie so that you can compare your code to mine and hear me discuss the solution in a little bit more detail.

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This video is part of

Image for CSS: Page Layouts
CSS: Page Layouts

71 video lessons · 41486 viewers

James Williamson
Author

 
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  1. 4m 20s
    1. Welcome
      54s
    2. How to use the exercise files
      3m 26s
  2. 1h 39m
    1. Box model review
      8m 47s
    2. Calculating element dimensions
      11m 11s
    3. Understanding margin collapse
      7m 59s
    4. Calculating em values
      7m 41s
    5. Calculating percentage values
      7m 51s
    6. Normal document flow
      13m 3s
    7. Controlling element display
      8m 53s
    8. Using CSS Resets
      7m 11s
    9. Fixed, fluid, and responsive layouts
      9m 9s
    10. CSS debugging tools
      6m 46s
    11. Using the Firebug Inspector and the WebKit Web Inspector
      11m 5s
  3. 53m 15s
    1. Page design workflow
      3m 6s
    2. Page design tools
      4m 56s
    3. Determining page structure
      7m 18s
    4. Creating image assets
      8m 58s
    5. Creating initial page structure
      7m 3s
    6. Adding meaning with classes and IDs
      5m 23s
    7. Structuring content with HTML5
      6m 6s
    8. Building internal structure
      10m 25s
  4. 1h 36m
    1. Floating elements
      7m 50s
    2. Clearing floats
      7m 28s
    3. Containing floats
      7m 50s
    4. Clearfix technique
      10m 38s
    5. Floating inline elements
      14m 34s
    6. Two-column floated layouts
      8m 17s
    7. Three-column floated layouts
      11m 30s
    8. Column height considerations
      7m 3s
    9. Creating equal-height columns
      10m 42s
    10. Floats: Lab
      5m 25s
    11. Floats: Solution
      5m 21s
  5. 51m 42s
    1. Relative positioning
      7m 59s
    2. Absolute positioning
      8m 59s
    3. Fixed positioning
      4m 23s
    4. Controlling stacking order
      8m 31s
    5. Clipping content
      8m 21s
    6. Controlling content overflow
      5m 38s
    7. Positioning elements: Lab
      3m 59s
    8. Positioning elements: Solution
      3m 52s
  6. 48m 46s
    1. Design considerations for fixed layouts
      3m 28s
    2. Establishing the layout grid
      7m 57s
    3. Defining column spacing
      9m 30s
    4. Applying the grid through CSS
      8m 56s
    5. Creating grid-based assets
      8m 26s
    6. Grid design resources
      6m 22s
    7. Building fixed layouts: Lab
      4m 7s
  7. 44m 35s
    1. Designing for flexible layouts
      2m 30s
    2. Calculating percentage values
      8m 45s
    3. Setting flexible width values
      6m 6s
    4. Making images flexible
      8m 10s
    5. Setting minimum and maximum widths
      7m 24s
    6. Building flexible layouts: Lab
      4m 53s
    7. Building flexible layouts: Solution
      6m 47s
  8. 49m 36s
    1. Responsive layout overview
      3m 49s
    2. Using media queries
      7m 16s
    3. Organizing styles
      8m 39s
    4. Making content responsive
      8m 33s
    5. Mobile design considerations
      7m 32s
    6. Building responsive layouts: Lab
      4m 23s
    7. Building responsive layouts: Solution
      9m 24s
  9. 1h 22m
    1. Creating multi-column text
      6m 36s
    2. Using borders to enhance design
      13m 59s
    3. Rounding corners
      6m 56s
    4. Adding drop shadows
      10m 35s
    5. Working with opacity
      6m 8s
    6. Utilizing the background property
      15m 5s
    7. Working with CSS sprites
      7m 58s
    8. Enhancing page design: Lab
      6m 22s
    9. Enhancing page design: Solution
      8m 38s
  10. 6m 25s
    1. Additional resources
      6m 25s

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