STYLING HTML5 ELEMENTS WITH CSS3 PROPERTIES in .NET

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STYLING HTML5 ELEMENTS WITH CSS3 PROPERTIES
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In s 1 and 2, you saw examples of CSS3 but were given no explanation of what was going on to add a new style to an existing element. Here, the focus is on adding style to h elements. In the next three chapters, you ll see far more aspects of using CSS3. Here, I focus on the basics of incorporating CSS3 into your HTML5. All style sheets can be added in three ways: You can use the <style> tag to define the properties of elements in the HTML5 page. You can use external style sheets, which are text files where you store a style you may want to reuse. Most professional developers and designers prefer the CSS3 external style sheets because perfecting the desired style takes a lot of work. When you want to make a change to the design of a Web site, you can make changes to many pages that use an external style sheet, just by changing the one style sheet. It s just more efficient than having to change the <style> attributes in each individual Web page.
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CHAPTER 3: TEXT TAGS AND A LITTLE CSS3
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You also can add styles without style sheets by using inline styles. An inline style is like a Break Glass in Case of Emergency! technique. A good-looking page has a plan developed in a style sheet. However, sometimes, you run into a case where you need some feature added, and instead of changing the style sheet, you just pop it in with a tag.
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Embedded style sheets
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An embedded style sheet is simply adding the style sheet directly into the HTML5 script. In the <head> of the program, add the style sheet using the <style> container. Place the element you want to style in the style container, and then add values to the property to be styled. Figure 3-7 shows the general format.
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Type to de ne as style sheet Open style tag
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Name of element (tag) Note curly braces Note semicolons
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Close style tag
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Value depends on property type
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Property depends on element type
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Figure 3-7: An embedded style sheet.
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Each element has a unique set of properties, and each property has values that can be assigned to it. When you change the value of the property, that value appears in the text inside the element s container. So, if you change the text color to red, all the text inside the element s container will be red. The following script (CSS3fonts.html in this chapter s folder at www.wiley.com/go/smashinghtml5) provides an example.
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<!DOCTYPE HTML> <html> <head> <meta http-equiv= Content-Type content= text/html; charset=UTF-8 > <style type= text/css > body { background-color:#fbf7e4; font-family:Verdana, Geneva, sans-serif; margin-left:20px; color:#8e001c; } h1 { background-color:#8E001C; color:#e7e8d1;
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PART I: THE LANGUAGE OF THE WEB
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font-family: Arial Black , Gadget, sans-serif; text-align:center; } h2 { background-color:#424242; color:#d3ceaa; font-family: Trebuchet MS , Arial, Helvetica, sans-serif; margin-left:5px; } </style> <title>CSS3-Embedded Stylesheet</title> </head> <body> <h1>This Is the Big Head</h1> <h2> Here Is the Second Head</h2> The body text is styled for a bit of a eft margin and picks up the color of the body along with its font. Notice that the background of the heads extends all the way across the page. Also notice that a space (& nbsp;) gives the h2 text a ittle indent so that it stays within the background. That s not a problem with the h1 head because it s centered. </body> </html>
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Figure 3-8 shows how the styled page looks. 54
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Figure 3-8: Text styled with CSS3.
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You should be aware that when you use style sheets, you have to pay attention to the little details like adding both curly braces, separating the property from the values by colons, and ending each property value with a semicolon. If your CSS3 style sheet doesn t work as you think it should, check those little gotchas! When using background colors, the background often extends across the entire page. Certain inline elements such as <span> can be used to contain the background to the affected text. With background colors in headers that are left- or right-justified, you ll want to add a space ( ) so that it doesn t bleed into the background color of the page.
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