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Creating a navbar from a list

From: CSS Web Site Design

Video: Creating a navbar from a list

So in this movie we're actually going to take a look at how we can change the kind of display role elements can have. That may sound a little abstract. Let's make it concrete. The nav bar you can see here, actually is gone back to being an ordered list of 123456, there are six navigation links, and we don't want it to look like that, do we? We want to be a horizontal navigation bar, and we can do that. You can see here near the bottom of this code the ordered list with the ID of navlinks, that were the navigation links with all the list items, and that's all cool.

Creating a navbar from a list

So in this movie we're actually going to take a look at how we can change the kind of display role elements can have. That may sound a little abstract. Let's make it concrete. The nav bar you can see here, actually is gone back to being an ordered list of 123456, there are six navigation links, and we don't want it to look like that, do we? We want to be a horizontal navigation bar, and we can do that. You can see here near the bottom of this code the ordered list with the ID of navlinks, that were the navigation links with all the list items, and that's all cool.

So these list items by default, generate what are known as block boxes. A block box is the same kind of box that would be generated by a div, or a paragraph, or heading, those sort of thing, when they go completely side to side and they don't let any other elements sit next to them. Hyperlinks and Spans and other such things generate what are known as inline boxes, where you can have a bunch of them on the same line of text and there's no problem there, they are actually wrapped from line to line if necessary. So, what we want to do here really is take the list items, which are generating block boxes and make them act more like they are spans and rather than changing the actual markup all we really need to do is say for the list items that are inside that navlinks, oh well, we're just going to have them be display inline.

And if we go back over and hit Reload, there you go. Now, the other aspects, the little vertical separators, those are done with borders as will be discussed in Chapter 7, but the basic point here is that these have got been from generating block boxes to generating inline boxes. So, what we want to do here is just take a little bit of a precaution. Remember this is still an ordered list, and there're still list items and in a couple browsers, what you will find sometimes is that even if you make your list items inline, they are still going to generate their markers- that would be the 123456. So, just to make sure we're going to say list-style none and that will switch off the markers there. This is not going to have any visible effect here in Firefox because Firefox rather appropriately, at least in my opinion, says, hey, these aren't the list items aren't generating the list item boxes anymore which are block type boxes, so I'm going to because they're generating in-line boxes, I'm not going to put the marker on, but anyway, you know, not every browser apparently agrees with that. So you say list-style none, just to cover your bases and make sure that those markers don't show up in other browsers.

So, that's display. There's really one other display value, no, there are two other display values that are of large interest, but there's one other that I'd like to point out. You may recall, or you may not, that there is a b elements inside the h1, which is used to set the color of the about tea text and the b element is inline. By default the b element generates an inline box. So, what we're going to do here, I'm going to set the background of it for a moment to be black.

Now, I'm going to go over and hit Reload. There's that black inline box, well, there's that black background on that inline box and now, what I'm going to say is display block. And if we now hit Reload, there you go, the b element is now generating a black box. For those of you who have some experience with XHTML and HTML, this doesn't mean that the b element has gone from being an inline element, to a block element. The only change is in the kind of box that's being generated. There is one other value of display that gets used fairly often and that's none. Display none means just don't display a box for this element, and if we hit Reload, the b element is going to go away right now. All gone.

It generates no box, it has no influence on the layout of the document. This is used primarily to do things like hide things that need to be sort of popped up as it were, sometimes drop down menus are hidden in their unhovered state, they are hidden by using display none. Sometimes it's by using visibility hidden. That always depends. The other reason that display none gets used is for things like printing, suppressing the display of things in print, which will be discussed in Chapter 9. But that's a display, basically displays what you fiddle, with the kind of box that an element generates.

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This video is part of

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CSS Web Site Design

73 video lessons · 60734 viewers

Eric Meyer
Author

 
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  1. 14m 34s
    1. Welcome
      28s
    2. What is CSS?
      5m 34s
    3. Design tour
      2m 38s
    4. Using the exercise files
      1m 20s
    5. Installing the Web Developer toolbar
      4m 34s
  2. 25m 56s
    1. XHTML essentials
      3m 55s
    2. CSS essentials
      5m 17s
    3. Embedded style sheets
      2m 20s
    4. Linking a style sheet
      2m 19s
    5. Linking to multiple style sheets
      2m 20s
    6. Using linked and embedded style sheets together
      4m 21s
    7. Using imported style sheets
      5m 24s
  3. 57m 48s
    1. ID selector essentials
      6m 38s
    2. Class selector essentials
      4m 9s
    3. Best practices for classes
      4m 52s
    4. Grouped selection
      4m 2s
    5. Descendant selectors
      6m 44s
    6. The sources of style
      6m 38s
    7. Specificity
      8m 21s
    8. Making things important
      4m 32s
    9. Inheritance essentials
      5m 12s
    10. Making things really unstyled
      4m 2s
    11. User style sheets
      2m 38s
  4. 39m 3s
    1. Box model essentials
      7m 35s
    2. Simple floating
      5m 3s
    3. Using float for layout
      5m 5s
    4. Fixing column drop
      5m 35s
    5. Clearing essentials
      4m 20s
    6. Float containment
      6m 35s
    7. Creating a navbar from a list
      4m 50s
  5. 38m 3s
    1. Coloring text
      4m 13s
    2. Defining color in CSS
      8m 12s
    3. Coloring backgrounds
      6m 35s
    4. Applying background images
      4m 19s
    5. Manipulating the direction of background images
      2m 52s
    6. Positioning backgrounds
      7m 23s
    7. Background shorthand
      4m 29s
  6. 58m 28s
    1. Altering line height
      7m 32s
    2. Font style and weight
      5m 45s
    3. Sizing fonts
      9m 59s
    4. Using font families
      10m 38s
    5. Font shorthand
      6m 5s
    6. Justifying text
      4m 56s
    7. Vertically aligning text
      4m 22s
    8. Transforming text
      3m 49s
    9. Text decoration
      5m 22s
  7. 44m 40s
    1. Margin essentials
      14m 21s
    2. Adding borders
      6m 52s
    3. Padding
      9m 17s
    4. Using negative margins
      7m 19s
    5. Margin collapsing
      6m 51s
  8. 20m 38s
    1. Styling tables and captions
      5m 23s
    2. Styling table cells
      6m 30s
    3. Styling a column with classes
      4m 51s
    4. Styling links inside table cells
      3m 54s
  9. 30m 40s
    1. Styling for specific mediums
      4m 3s
    2. Creating a print style sheet
      6m 35s
    3. Hiding layout for print
      4m 11s
    4. Styling for print
      6m 34s
    5. Complex styling for print
      4m 37s
    6. Creating a footer
      4m 40s
  10. 37m 23s
    1. Getting started
      1m 11s
    2. Setting global styles
      4m 4s
    3. Defining masthead and navbar colors
      3m 27s
    4. Layout of the navlink bar
      3m 38s
    5. Using columns
      4m 49s
    6. Setting content styles
      1m 53s
    7. Creating the sidebar boxes
      5m 42s
    8. Creating the sidebar form
      3m 23s
    9. Completing the sidebar
      3m 29s
    10. Making a table
      3m 12s
    11. Creating a footer
      2m 35s
  11. 1m 28s
    1. Goodbye
      1m 28s

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