Beginning HTML with CSS and XHTML: Modern Guide and by Craig Cook

By Craig Cook

Which will get into constructing sites, crucial factor you would like is a superb figuring out of Hypertext Markup Language, or HTML-the language that most of site content material is written in.Beginning HTML with CSS and XHTML: glossy consultant and Reference accommodates functional examples that might make it easier to constitution your facts thoroughly utilizing (X)HTML, besides styling and format fundamentals utilizing Cascading type Sheets (CSS). you are going to additionally how to upload dynamic habit for your information utilizing the JavaScriptT language.This publication is forward-thinking simply because the entire featured code and strategies are criteria compliant and reveal most sensible practices-so you will not waste time on superseded, undesirable ideas. Your websites will paintings accurately in such a lot net browsers and be available to internet clients with disabilities, simply locatable with renowned se's, and compact in dossier size.Even when you already be aware of HTML and CSS fundamentals, this publication will nonetheless be priceless to you. It gains accomplished reference tables on the again, so that you can lookup the entire challenging attributes, codes, and homes fast and easily.Pick up a duplicate of this booklet since it: * Teaches standards-compliant HTML - now not superseded concepts * contains reference sections that you can simply search for syntax * does not require prior programming event for comprehensionBruce Lawson and Gez Lemon acted as technical reviewers of starting HTML with CSS and XHTML. Bruce and Gez are energetic participants of the net criteria Project's Accessibility activity strength, and feature helped make sure that the ebook follows currentguidelines and most sensible perform.

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That semicolon is important to separate multiple declarations, but if there’s only one declaration in the rule or if it’s the last declaration in a series, the terminating semicolon is optional. It’s not a bad idea to get in the habit of including a semicolon at the end of every declaration, even when there’s only one, just to play it safe. If your CSS doesn’t conform to this basic structure and syntax—if you forget the closing brace or the colon separating a property from its value, for example—the entire rule or even the entire style sheet might fail.

You can also combine all three methods—inline, embedded, and external—to style your web pages, although it’s rarely advisable. If just one page on your site needs some additional rules, you might choose to include an embedded style sheet within that document alone. You may even, very rarely, want to call out one element for special treatment and use an inline style for just that element. In almost every case, external style sheets are the best approach: they eliminate presentational markup, improve a site’s performance, and are much easier to maintain.

Thankfully, you’ll rarely need to calculate a selector’s numeric specificity value if you just remember these few rules: • A universal selector isn’t specific at all. • An element selector is more specific than a universal selector. • A class or pseudo class selector is more specific than an element selector. • An ID selector is more specific than a class or pseudo class. • Properties in an inline style attribute are most specific of all. Specificity is also cumulative in combined and descendant selectors.

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