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CSS Holly Hack

The CSS Holly Hack was a technique that used CSS comments and property parsing differences to target specific versions of Internet Explorer, named after Holly Bergevin who popularized the method. The hack exploited IE's incorrect parsing of CSS comments within property declarations, allowing developers to serve different values to IE versus standards-compliant browsers.

Why CSS Holly Hack Matters

The Holly Hack demonstrated the sophisticated understanding of browser parsing quirks that web developers needed during the IE compatibility era, where knowledge of CSS specification edge cases became essential job skills. These named hacks created a shared vocabulary within the web development community and influenced the development of CSS methodologies focused on maintainability and standards compliance.

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