The !important rule in CSS is used to add more importance to a property/value than normal.
In fact, if you use the !important rule, it will override ALL previous styling rules for that specific property on that element!

Out put:

Example Explained
In the example above. all three paragraphs will get a red background color, even though the ID selector and the class selector have a higher specificity. The !important rule overrides the background-color property in both cases.