"Meaningful markup provides the developer with several important benefits. Meaningful pages are much easier to work with than presentational ones. For example, say you need to change a quotation on a page. If the quotation is marked up correctly, it is easy to scan through the code until you find the"
"When naming your IDs and classes, it is important that you keep the names as “unpresentational” as possible. For instance, if you want all of your form notification messages to be red, you could give them a class of red. This is fine as long as there are no other red elements on the page. However, s"
"At the same time, they can be overused and even abused. Novice CSS authors often add classes to nearly everything in an attempt to get fine-grained control over their styles. Early WYSIWYG editors also had the tendency to add classes each time a style was applied. Many developers picked up this bad "
"In the preceding example, each element is identified as being part of a news story by using an individual news-related class name. This has been done to allow news headlines and text to be styled differently from the rest of the page. However, you don’t need all these extra classes to target each in"
"When browser manufacturers started to create standards-compliant browsers, they wanted to ensure backward compatibility. To accomplish this, they created two rendering modes: standards mode and quirks mode. In standards mode, the browser renders a page according to the specifications, and in quirks "
"With even a moderately complicated style sheet, it is likely that two or more rules will target the same element. CSS handles such conflicts through a process known as the cascade. The cascade works by assigning an importance to each rule. Author style sheets are those written by the site developers"