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! important (not highly recommended, it is safest to use one of the following)

With IE7's support for! important, the! important method is now only compatible with IE6. Pay attention to the way you write. Remember that the location of the declaration needs to be advanced.)

Code:

# wrapper {

Width: 100pximportance; / * IE7+FF * /

Width: 80px; / * IE6 * /

}

2, IE6/IE77 versus FireFox

* + html and * html are IE-specific tags, which are not supported by firefox. And * + html is a unique tag for IE7.

Code:

# wrapper {width: 120px;} / * FireFox * /

* html # wrapper {width: 80px;} / * ie6 fixed * /

* + html # wrapper {width: 60px;} / * ie7 fixed, note the sequence * /

Note:

The compatibility of * + html with IE7 must be guaranteed with the following declaration at the top of the HTML:

Code:

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