Please feel free to borrow, steal, abduct, and/or torture the documents contained here. Enjoy.
By making the W3C the keeper of the XML standard, it ensures that no one vendor should be able to cause interoperability problems to occur between systems that use the open standard. This should be reassuring to most companies making an investment in this technology, by being vendor neutral, this solution proposes to keep even small companies out of reach of big companies choosing to change the standards on them. For example, if a big company chooses to change the platform at its whim, then most other companies relying on that platform suffer. By keeping all data in XML and using XML in communications protocols, companies can maximize the lifetime of their investment in their products and solutions.
By being language independent, XML bypasses the requirement to have a standard binary encoding or storage format. Language independence also fosters immense interoperability amongst heterogeneous systems. It is also good for future compatilbilty. For example, if in the future a product needs to be changed in order to deal with a new computing paradigm or network protocol, by keeping XML flowing through the system, addition of a new layer to deal with this change is feasible.
A simple two column layout with the standard left-side menu.
Practically the same HTML as 2 columns - left menu, but with a different stylesheet.
Three columns, no tables, intelligent order of elements. What more is there to say?
Many a talented web designer has struggled with CSS-based centering. Though CSS vertical centering eludes us, two techniques for horizontal centering are approved. Take your pick: Auto-width Margins or Negative Margin.
These style sheets, which are not part of the HTML document but are still used by it, are referred to as external style sheets. This is due to the fact that they're style sheets but are external to the HTML document. (Go figure.)
In order to successfully load an external style sheet, LINK must be placed inside the HEAD element but may not be placed inside any other element, rather likeand good, of course (even if it does ignore floats), but look inside a block-level element such as a paragraph. There are all these lines of text, and we may well ask, "How did they get there? What controls their arrangement? How can I affect that?"
In order to understand how lines are generated, let's first consider the case of an element containing one very long line of text, as shown in Figure 8-45. Note that we've put a border around the line; this has been accomplished by wrapping the entire line in a SPAN element, and assigningmargin-left, border-left,padding-left, width ,padding-right, border-right,and margin-right. These are illustrated in Figure 8-9. The values of these seven properties mustequal the value of width for an element'sparent.
Only three of these seven properties can be set toauto: the width of the