By Craig Cook
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Extra info for Beginning HTML with CSS and XHTML: Modern Guide and Reference
P> However, you should avoid using inline styles. They mix presentation with your structural markup, thus negating one of the primary advantages of using CSS. They’re also highly redundant, forcing you to declare the same style properties again and again to maintain C H APTE R 2 ■ XH T ML A ND CS S BA SI CS consistent presentation. Should you ever want to update the site in the future—changing all your headings from red to blue, for example—you would need to track down every single heading in every single document to implement that change, a daunting task on a large and complex website.
For example, the beginning of a paragraph is indicated by the opening tag,
, and the paragraph ends with a
closing tag; the slash after the opening bracket is what distinguishes it as a closing tag.
These twin tags and everything between them forms a complete element, and elements are the basic building blocks of an XHTML document. Some elements don’t require a closing tag in older versions of HTML—the appearance of a new opening tag implies that the previous element has ended and a new one is beginning.
This attribute usually isn’t needed, since a language’s direction should be inferred from the lang and xml:lang attributes. • lang: Specifies the language in which the enclosed content is written. Languages are indicated by an abbreviated language code such as en for English, es for Spanish (Español), jp for Japanese, and so on. uk/main/language_codes. • xml:lang: Also specifies the language in which the enclosed content is written. This is the XML format for the lang attribute, as it should be used in XML documents.
Beginning HTML with CSS and XHTML: Modern Guide and Reference by Craig Cook