2.7.1 CSS on Demand

CSS On Demand (COD) is a technique which saves the client from having to download huge CSS stylesheets, when only a small portion of the style rules are applied on the current page. This is accomplished by splitting a large stylesheet into smaller modular stylesheets, and devising a bootstrapping mechanism that loads only those that affect elements on the page currently being shown.

A more advanced implementation of COD loads CSS files inidividually using AJAX techniques while corresponding HTML elements are also being loaded asynchronously.