CSS Specificity Calculator

What is a CSS Specificity Calculator?

Calculate the exact specificity score tuple `(Inline, IDs, Classes/Attributes/Pseudos, Elements)` of any CSS selector to understand which style rules win in CSS cascade conflicts.

Why Use This Tool?

CSS Debugging: Determine why a CSS rule is not overriding an existing style without relying on `!important`.
Refactoring Stylesheets: Clean up overly specific CSS selectors in large codebases.
Learning CSS Cascade: Understand how ID selectors (`#id`), classes (`.class`), and element tags (`div`) weigh against each other.

How to Use

Type or paste any CSS selector (e.g. `nav#main ul.menu li a:hover`).
View calculated specificity score tuple `(0, 1, 2, 2)`.
Compare multiple selectors to see which one takes precedence.

Real Working Example

Input:

Selector A: #nav .item:hover
Selector B: nav ul li.item

Output Result:

Selector A Specificity: (0, 1, 2, 0) [Score: 120] -> WINNER!
Selector B Specificity: (0, 0, 1, 3) [Score: 13]

Important Technical Details & Features

Official W3C Specificity Specs: Follows official W3C CSS Selectors Level 4 specificity calculation rules.
Tuple Breakdown: Displays breakdown across Inline (1,0,0,0), ID (0,1,0,0), Class/Attr/Pseudo (0,0,1,0), and Element/Pseudo-element (0,0,0,1).
Client-Side Engine: Instant scoring in browser memory.

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Frequently Asked Questions

How is CSS specificity calculated?

Specificity is calculated as a 4-part score: (Inline styles, IDs, Classes/Attributes, Elements).

Does an ID selector always override a Class selector?

Yes, a single ID selector (0,1,0,0) beats any number of class selectors (0,0,20,0).

Is it free?

Yes, 100% free.

Does it support pseudo-classes like :hover?

Yes, pseudo-classes count as class selectors (0,0,1,0).

What is the main function of CSS Specificity Calculator?

Calculate CSS selector specificity tuples (Inline, IDs, Classes, Elements) to resolve stylesheet override conflicts. This calculator computes css specificity values and parameters accurately in your browser.