Research on IE "+" CSS hack

Expression: + property: Value

Test environment: ie5, IE6, IE7, ff1.5, ff2.0, opera 9, Safari 2

Test results: ie5, IE6, and IE7 browsers are recognized; ff2.0, opera 9, and Safari 2 browsers are not recognized.

Conclusion:We can use "+" to Implement CSS hack only recognized by IE.

For example, to realize the width of PX in IE, and the width of PX in other browsers, you can use "+" hack, as shown below:

# Hack {width: 500px; + width: 480px;/* Only ie */}

This should be attributed to IE's recognition of some special characters. You can also test other special characters such as: "> ","-","@"...... There may be more gains.

PS: Some friends may think of "_" hack, but they are different because "_" is not recognized in IE7.

Additional reading: Internet Explorer 7 CSS hacks