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CSS Web Site Design

Applying background images


From:

CSS Web Site Design

with Eric Meyer

Video: Applying background images

So, so far we've been in this chapter, we've been talking about color and how to add color to the foreground or the background. Now it's time to do something a little more interesting with backgrounds and that's add images, or an image, as the case may be and add one image per background, although you can add images, you can have as many different backgrounds as you like have images in them. So, what we're going to do in this video is just take an image and apply it to the background of an element using CSS. Now, if you look here, what you see is sort of a basic version of our Javaco design, and what I've done in the content area is I've given it sort of a light gray background, so everything underneath the masthead and that little white separator between the masthead and the rest of it, we have this light gray background, and that's the area to which I'm going to add an image. So you can see, here's the style, the CSS setup, to give element with an ID of content this background color, and now I'm going to add a background image and the way this works is you actually have a reference, a URL reference to an external file, an image, although theoretically you could put any kind of file back there.
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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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CSS Web Site Design
6h 8m Intermediate Sep 12, 2006

Viewers: in countries Watching now:

CSS gives Web designers control over the appearance of their web sites by separating the visual presentation from the content. It lets them easily make minor changes to a site or perform a complete overhaul of the design. In CSS Web Site Design, instructor and leading industry expert Eric Meyer reviews the essentials of CSS, including selectors, the cascade, and inheritance. The training also covers how to build effective navigation, how to lay out pages, and how to work with typography, colors, backgrounds, and white space. Using a project-based approach, Eric walks through the process of creating a Web page, while teaching the essentials of CSS along the way. By the end of the training, viewers will have the tools to master professional site design. Exercise files accompany the training videos.

Subjects:
Web Web Design
Software:
CSS
Author:
Eric Meyer

Applying background images

So, so far we've been in this chapter, we've been talking about color and how to add color to the foreground or the background. Now it's time to do something a little more interesting with backgrounds and that's add images, or an image, as the case may be and add one image per background, although you can add images, you can have as many different backgrounds as you like have images in them. So, what we're going to do in this video is just take an image and apply it to the background of an element using CSS. Now, if you look here, what you see is sort of a basic version of our Javaco design, and what I've done in the content area is I've given it sort of a light gray background, so everything underneath the masthead and that little white separator between the masthead and the rest of it, we have this light gray background, and that's the area to which I'm going to add an image. So you can see, here's the style, the CSS setup, to give element with an ID of content this background color, and now I'm going to add a background image and the way this works is you actually have a reference, a URL reference to an external file, an image, although theoretically you could put any kind of file back there.

In practice, you really can only add rest images, that the format of the browser understands like GIF, or JPEG or PNG or something like that. So, I'm going to add a reference to image curl-gray.gif. Now, this URL is a, is a relative URL, which you may be familiar with in turn relative URLs in hyperlinks. You can also do an absolute URL if you wanted to. We're going to use a relative URL.

Image URLs in URLs in general in CSS are relative to the location of the style sheet, not the location of the HTML document, or the XHTML document. So, if I had a URL reference in my external style sheet, then the URL reference to an image from an external style sheet would be relative to the location of that external style sheet. Here, since the style sheet is embedded into the HTML document, basically it's taken from where the style sheet is, the subject just happens to live inside this XHTML document. So, what this is going to do is, from the location of the style sheet, the browser is going to go to an images subdirectory from the directory that the style sheet is living in and then it's going to look for the image curl-gray.gif, which if you look here, here's images and there's curl-gray.gif. So, having done that and hit save, if we hit Reload in Firefox, tadaa! the image has shown up, is being repeated through out the entire background of the content, the element with ID of content.

It's just one image is just one instance of the scroll, which is just been repeated again and again and again and we don't see that background color anymore, because it's completely obscured by this repeated image, this tiles image. In fact, if we scroll down you can see that it goes as far as the end of the content area. So we can also do this on the body if we particularly felt like it instead of having content, have this background color, which we can shift it to the body and then that would go throughout the entire body, not just the content area.

Of course we wouldn't be able to see it here, where the masthead and the navlinks are, because those are basically in front of the body quote, unquote. They're drawn over top of the body and so their background is obscure, the body background behind them. If we were to take this background away, then we would see this repeated graphic throughout the masthead and the navlinks here. So that's how you add an image to an element and its really pretty darned easy. What we're going to see in the next few videos is how to do more than just sort of simple tiling and affect the direction of the tiling, even the placement of the image and other fun stuff like that.

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