[Fact 2]: Internet Explorer 5.0 for the Macintosh, shipped in March 2000, was the first browser to have full .Even though early browsers such as Internet Explorer 3 and 4, and Netscape 4.x had support for CSS, it was typically incomplete and afflicted with serious bugs.
[Fact 3]: Other pseudo-classes and pseudo-elements are, for example, :first-line, :visited or :before.
[Fact 4]: Like programming and scripting language libraries, CSS frameworks are usually incorporated as external .css sheets referenced in the HTML <head>.
[Fact 5]: The proliferation of such CSS-related inconsistencies and even the variation in feature support has made it difficult for designers to achieve a consistent appearance across platforms.
[Fact 6]: Some CSS2 properties that no browser successfully implemented were dropped, and in a few cases, defined behaviours were changed to bring the standard into line with the predominant existing implementations.
[Fact 7]: Depending on their browser and the web site, a user may choose from various style sheets provided by the designers, may remove all added style and view the site using the browser's default styling, or may override just the red italic heading style without altering other attributes.File highlightheaders.css containing:h1 { color: white; background-color: orange !important; }h2 { color: white; background-color: green !important; }Such a file is stored locally and is applicable if that has been specified in the browser options.
[Fact 8]: Declarations not set in the highest priority source are passed on by a source of lower priority such as the user agent style.
[Fact 9]: Of the nine proposals, two were chosen as the foundation for what became CSS: Cascading HTML Style Sheets .
