In css, you can use "!important" to increase weight, the syntax is "selector {style: value!important;}". Adding "!importanrt" to the css style can override the parent style; it is not recognized in IE6, but can be used in IE7 and other browsers to handle browser compatibility.
The operating environment of this tutorial: Windows 7 system, CSS3&&HTML5 version, Dell G3 computer.
We hope that all atomic classes in the page have very large weights, so that once any tag in the page carries this atomic class, a style will be generated immediately without being affected by its own style. Stacked. So, at this time, you can use !important to increase the weight!
.warning{ color:red !important; }
important means important in English. Pay attention to how you write! Written before the semicolon, if there are multiple attributes to increase the weight, then multiple attributes must be written:
.warning{ color:red !important; font-weight: bold !important; }
Note that the page is strictly prohibited from abusing !important to increase the weight, and can only be used in the case of atomic classes!
Note:
!important does not affect inheritance. A tag is affected through inheritance, and its weight is 0. Even if !important is 0, it cannot compete with the selected selector.
!important does not affect the proximity principle. It’s useless to write !important on the far one, the near one will prevail!
If they are all inherited attributes and the descriptions are the same, this time! It is only useful to increase the weight of important.
Recommended learning: css video tutorial
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