The !important annotation is used to artificially increase the specificity of a given property value in a rule. This is usually an indication that the specificity of the entire CSS has gotten a bit out of control and needs to be refactored. The more frequently !important is found in CSS, the more likely it is that developers are having trouble styling parts of a page effectively.

Rule ID: important

This rule is aimed at keeping your specificity levels in check. As such, it warns whenever !important is used.

The following patterns are considered warnings:

.mybox {
    color: red !important;
}

• Don't use !important
• !important CSS Declarations: How and When to Use Them
• When using !important is the right choice