Social Networking Management System Software

Figure 2.2.1.b Modern web page using CSS Now the file containing the content is much smaller because it does not contain presentation or style information. All the styling has been placed in a separate file that the browser reads and "layers" over the content to produce the final result.

Using CSS to control the presentation of the content has big advantages: Maintaining and revising the page is much easier. If we need to change all the title colors, we can just change one line in the CSS file.

Both files are much smaller, which allows the data to load much more quickly than without using CSS. The CSS file has the additional advantage that it will be cached (saved) on a viewer's local computer so that it won't need to be downloaded from the Web each time the viewer visits a page.

Dynamic Web Pages Dynamic web pages are what are created by a CMS. A CMS does for content what CSS does for presentation.

That means, CSS separated presentation from content, a CMS separates the content from the page. This might seem like that leaves nothing, but in reality what is left can be thought of as "placeholders." This can be represented as what's shown in Figure 2.2.1.c :