What is CSS hack

Due to different browsers, and even different versions of the same browser, the parsing of CSS is not the same, resulting in inconsistent page results, written for different browsers CSS code is called CSS hack.

Commonly used CSS hack there are three ways, CSS internal hack, selector hack, HTML header reference, the first of the most commonly used.

The addition of a "*" in front of the property will only be valid for IE6, 7, and other versions of IE and modern browsers will ignore this directive (no special instructions, all hack in this article refer to the effect of the document that declares DOCTYPE)

There is a "-" in front of the property, only IE6 recognition

Adding "!important" after the property value is only IE6 unrecognized, and other versions of IE and modern browsers can recognize

What is CSS hack