Which is the Best Browser Supporting CSS ?

Today both Netscape and Microsoft have agreed to implement CSS in their respective browsers and this means that Web authors who want to use CSS have to know
which CSS elements they can and can’t use, as well as the significant differencesin the way adopted CSS elements behave in both browsers.
Both use only a subset of the complete specification as laid out by the W3C. Since both companiesare members of the W3C, however, they will adopt the full set of CSS elements over time — at least that is the hope. CSS1 (and CSS2) will only be useful to Web authors if they are widely adopted and fully implemented by browser manufacturers. If they are not, CSS could easily disappear. There is a precedent for this: the official HTML 3.0 specification was widely ignored by browser manufacturers.

The piecemeal way in which Netscape Navigator and Internet Explorer have adopted CSS elements is holding CSS back from wider adoption within the Web authoring community. In many cases, CSS elements that are supported in Internet Explorer are not supported in Netscape Navigator, or they are not supported in either browser. Sometimes only certain values of a CSS element are supported, or they only work when associated with certain HTML tags. There are even cases where a CSS element has been adopted for use within a beta (or “preview”) version of a browser and then later dropped in the next beta release — presumably an oversight, but not exactly something to inspire confidence in CSS for a Web author.

There are also significant differences in the way CSS code works in the same browser operating under different operating systems.
In general, if a certain feature is already supported within one browser, you can most likely use a CSS element to set it, too. For example, the TEXTDECORATION element has a value called BLINK that flashes the text on and off repeatedly. It is supported within Netscape Navigator — where you
could use the tag to do much the same sort of thing — but not in Internet Explorer, which has never supported . On the other hand, there is a feature seen only in Internet Explorer called “watermarking” that allows the Web author to create a background image that remains fixed upon the page even when a user scrolls up or down. There is a CSS value ("BACKGROUND-ATTACHMENT: FIXED") that does the same thing.

Not surprisingly,this CSS element is supported within Internet Explorer, but not within Netscape Navigator. Knowing which CSS elements to use and which not to use is half the battle in constructing workable CSS code. It can only be hoped that over time all CSS elements will be supported equally well within the two major browsers.As time goes by and more Web authors become familiar with the details of CSS (and as more Web browsers fully implement and are able to display Web pages that use CSS), the demand and need for new HTML tags will be significantly diminished. Depending on how things turn out, CSS will either be a triumph or a resounding failure for the W3C, ultimately determining the evolution and development of HTML and of the relevancy of the W3C itself.
An understanding of the strengths and weaknesses of a given browser will help you to choose which CSS elements will be most effective inyour Web pages.


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