Cascading Style Sheets (CSS) is a W3C standard mark-up language for defining the appearance of web pages. The use of CSS allows developers to fully separate the content of the page from its presentation, speeding up the development process and also making the pages load more quickly in the browser. Whereas 20th century websites typically used tables to construct web pages and position elements, CSS now provides a cleaner and more efficient way of controlling all aspects of web page layout.
The range of computer users who have some involvement in building web pages and web sites is vast and a good many of these users choose Dreamweaver as the software tool that helps them create the web content they need without needing to become an expert on underlying technologies such as CSS. Dreamweaver CS3 includes better support for Cascading Style Sheets than previous versions. However, there is still room for improvement.
One of the most noticeable changes in this the latest version of Dreamweaver is that users are now positively encouraged to create web pages using CSS for page layout rather than tables. Each time a new web page or template is created, Dreamweaver offers you a choice of basing the page on one of about thirty preset CSS layouts with names like “3 Column Elastic” and “3 Column Fixed”.
Pages created using CSS rely heavily on the use of the HTML DIV element, a multipurpose container of web content. Choosing one of the Dreamweaver CSS presets creates a page containing a series of DIV elements complete with placeholder text and the CSS code necessary to control the position and dimension of the DIVs. The placeholder text and HTML code both contain brief explanations of the techniques used and advice on how to customise these basic pages for your own purposes.
CSS works most efficiently when you can place all of your CSS code in one external file and link that file to each of your HTML pages. Dreamweaver CS3 still does not make it easy for inexperienced users to create CSS-based pages in this way. If the user creates ten web pages based on Dreamweaver’s preset CSS designs, each will have its own code embedded within the page itself. There is, however, a great feature for moving embedded code across to an external CSS file. You just select a series of CSS definitions, right-click and choose “Move CSS Rules” which is available in the “CSS Styles” section of the context menu.
This ability to move blocks of CSS is an excellent feature but one has to ask if new users will see its significance and actually use it. The fact is that, given the increasing importance of CSS and Dreamweaver’s role as the fledgling developers best friend, the program could use some improvement in the way it handles CSS.
It is also disappointing that Dreamweaver still automatically generates CSS styles called “style1″, etc. each time the user applies a font or colour to selected text. Surely it would be easier to simply remove these basic attributes and just let the user either apply a style to the selection or, if no styles exist, create a new one. Perhaps this will be introduced in the next release of this excellent program.
