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.

#28 My Thoughts

by Tanyel <>

Friday December 3rd, 1999 8:56 PM

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Most of the people on this website seem to be angered when people criticize Mozilla in its early stages, but most people seem to think it is ok to criticize Internet Explorer 5.5 in its early stages. To me, that seems more like bias than logical thinking.

Die Microsoft.

I tend to think both web browsers are worthless trash, but I think Netscape 5 will be good if it is ever released.

Die Microsoft.

I think it would be less abrasive to call Mozilla defenders "advocates" instead of "fanatics". It is necessary to defend the Mozilla web browser to compete against Microsoft's advertising.

Die Microsoft.

I like Macintosh computers and I think they will always be better than "PC's". "PC" makers are trying to emulate Macintosh. What in the world is an iPaq? Also, iMacs are cute.

Die Microsoft.