#debugging

2 articles tagged “debugging”.

Five competing CSS rules for the same button, with the browser's tie-breakers deciding which one wins

CSSIntermediate

The CSS Cascade and Specificity: Why Your Styles Don't Apply

When two CSS rules disagree, the browser follows a strict set of rules to pick a winner. Learn how the cascade decides, calculate specificity by hand, and stop reaching for !important.

Oct 29, 20265 min read

Layers of a web page shown in 3D: a modal with z-index 9999 trapped inside a layer that sits below the site header

CSSAdvanced

CSS Stacking Contexts: Why z-index: 9999 Doesn't Work

z-index isn't a global ranking. It only compares elements inside the same stacking context, and a dozen properties quietly create new ones. Learn the painting order, find the context that traps your element, and fix overlap bugs for good.

Oct 29, 20267 min read