# CSS Selector Specificity Calculator

Calculate CSS selector specificity scores, compare multiple selectors, and get suggestions for avoiding cascade conflicts

> Canonical page: https://elysiatools.com/en/tools/css-selector-specificity-calculator

- **Category:** Development

- **Keywords:** css, selector, specificity, cascade, frontend

## Overview

Use this tool to compute selector specificity, compare multiple selectors side by side, and understand which rules are likely to win in the cascade. It is especially useful when debugging component styling and override behavior.

## Inputs

- **Selectors** (textarea): .card .title #app .sidebar a:hover button.primary:is(:hover,:focus)

## When to use

- When debugging why a specific CSS style is not being applied to an element despite being defined in the stylesheet.
- Before performing a CSS refactor to identify overly specific selectors that might cause maintenance issues.
- When comparing multiple competing selectors to ensure the intended rule wins the cascade without using !important.

## How it works

- Enter one or more CSS selectors into the input area, placing each on a new line.
- The tool parses each selector to count IDs, classes, attributes, pseudo-classes, elements, and pseudo-elements.
- It calculates a three-part specificity score (a, b, c) and ranks the selectors from highest to lowest priority.
- Review the generated report for override suggestions and a visual breakdown of the cascade logic.

## Use cases

- Resolving style conflicts in large component libraries where global styles interfere with local overrides.
- Auditing legacy codebases to find and simplify selectors with unnecessarily high specificity scores.
- Training developers on the mechanics of the CSS cascade and the mathematical weight of different selector types.

## Frequently asked questions

### What does the (a, b, c) score represent?

It represents the count of IDs (a), classes/attributes/pseudo-classes (b), and elements/pseudo-elements (c) in a selector.

### Does this tool support the :is() and :where() pseudo-classes?

Yes, it correctly calculates specificity for functional pseudo-classes based on their internal arguments according to CSS specifications.

### How are inline styles handled in the cascade?

Inline styles have higher specificity than any selector in a stylesheet, effectively sitting above the (a, b, c) calculation.

### Why is my selector not winning even with high specificity?

Check for the !important flag in competing rules or ensure the source order isn't giving priority to a later rule with equal specificity.

### Can I compare multiple selectors at once?

Yes, you can input multiple selectors separated by new lines to see a side-by-side priority comparison and ranking.

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## Samples

- [CSS Selector Samples](https://elysiatools.com/en/samples/css-selectors): Collection of CSS selector examples for extraction and analysis testing
- [Bulma CSS Framework Samples](https://elysiatools.com/en/samples/bulma): Bulma CSS framework examples including columns, components, form controls, layout system, and modern CSS-based design patterns
- [CSS Viewer Samples](https://elysiatools.com/en/samples/css-viewer-samples): Sample CSS stylesheets (variables, flexbox/grid, animations) for the in-browser CSS Viewer
- [Milligram CSS Framework Samples](https://elysiatools.com/en/samples/milligram): Milligram CSS framework examples including typography, forms, grids, and components

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