CSS Tutorial => The !important declaration

Example

The !important declaration is used to override the usual specificity in a style sheet by giving a higher priority to a rule. Its usage is: property : value !important;

#mydiv {
    font-weight: bold !important;    /* This property won't be overridden
                                       by the rule below */
}

#outerdiv #mydiv {
    font-weight: normal;            /* #mydiv font-weight won't be set to normal
                                    even if it has a higher specificity because
                                    of the !important declaration above */
}

Avoiding the usage of !important is strongly recommended (unless absolutely necessary), because it will disturb the natural flow of css rules which can bring uncertainty in your style sheet. Also it is important to note that when multiple !important declarations are applied to the same rule on a certain element, the one with the higher specificity will be the ona applied.

Here are some examples where using !important declaration can be justified:

If your rules shouldn't be overridden by any inline style of the element which is written inside style attribute of the html element.
To give the user more control over the web accessibility, like increasing or decreasing size of the font-size, by overriding the author style using !important.
For testing and debugging using inspect element.

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CSS Cascading and Specificity The !important declaration

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