Specificity

CSS Specificity and the Cascade

Learn how the browser decides which CSS rule wins when multiple selectors target the same element.

How Does CSS Specificity Work?

CSS specificity is a weighted scoring system the browser uses to decide which of several conflicting rules wins on an element, calculated by counting IDs, clas…

What Is BEM Methodology and Why Use It in CSS?

BEM (Block, Element, Modifier) is a CSS naming convention that structures class names as block__element--modifier to make every class flat, self-documenting, a…

What Are CSS Cascade Layers (@layer) and Why Do They Matter?

CSS cascade layers, declared with @layer, let a developer group style rules into explicitly ordered buckets so that layer order — not selector specificity — de…

How Does Native CSS Nesting Syntax Work?

Native CSS nesting lets you write a selector inside another selector’s rule block, using the & symbol to reference the parent selector explicitly, so related s…

What Is CSS Specificity and How Do You Resolve Conflicts?

CSS specificity is the algorithm the browser uses to decide which of several conflicting rules wins for a given element, calculated as a weighted score across…