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Chapter 3. Browser Adoption of CSS > Internet Explorer 5.5

3.4. Internet Explorer 5.5

Internet Explorer 5.5 was released in July 2000, well over a year after the previous 5.0 release. This version constituted a major improvement in complying with both CSS1 and CSS2 properties, managing to fill in major “gaps” in its support for properties hitherto unsupported in the previous version of the browser. This version saw improved support in many areas, including such things as support for the :first-letter and :first-line pseudo-properties.

One oddity about this browser is that it has incorporated a lot of “bozo code” which ensures in many cases that improperly coded CSS properties are accepted as valid. For example, it accepts improperly formatted CSS code such as hexadecimal color values that don't begin with a hash symbol (“#”), invalid id and class names, and it automatically assumes values to be pixel values if not otherwise specified (so for example, font-size: 20 would be rendered as font-size: 20px). While this might seem like a good thing, the sloppy Web author who doesn't check their invalid code in other browsers may never notice the problem the code will cause in browsers that expect properly formatted CSS.


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