IE5.5: First Look

Friday December 3rd, 1999

I've done some preliminary CSS testing of IE5.5 (available through Specifically I ran IE 5.5 through the battery of David Baron's CSS tests, and found some interesting results. IE 5.5's CSS support has undergone very little change from 5.0, and some regressions were noticable. IE 5.5 seems to pass test 5.3 (CSS2 Universal Selector) that IE 5.0 did not, but it fails two tests in section 6.4.4 (Parsing Test 4 and Test 5) that IE 5.0 apparently passed. There was one other that *may* have passed (9.1.2) where 5.0 failed, and one test in 10.7 *may* have failed where 5.0 passed, but I can't determine these for a certainty. Finally, IE 5.5 still does not pass the Box Acid Test.

According to MS's "What's New in Internet Explorer 5.5" page, IE 5.5 handles more "CSS styles" such as first-letter and first-line, but they don't go into any more detail.

From these results, I'm wondering if MS is giving up completely on significant advances in the CSS support in their current rendering engine. IE on the Mac is supposedly being developed to utilize a new rendering engine, codename "Tasman". Maybe Microsoft is planning something similar for their 6.0 Windows version.

In any event it does not look like the next version of IE will have significant CSS improvements as many hoped and expected.

#66 May the best browser win....

by DTHML_Fiend

Saturday December 4th, 1999 1:41 PM

You are replying to this message

Right now Im on the mind set that I hope the best browser wins. Right now MS has the title of the best browser and rightly so. Now Im sure we have IE6 and Mozilla in the works. Who will win, well who knows. Of course we know what Mozilla will be offering but yet we don't know what IE6 will be offering. And this to me makes it seem foolish to be jumoing up and down saying the Mozilla will kick IE's ass, because just like Nav 4 is not a example of Mozilla's features, nor is IE5 an example of IE6's featues. I guess what Im saying is that Im all for Mozilla and Im all for IE6. And after the dust settles we might have two good browsers or we might have one, but the Wise Man will be backing BOTH.