The article explains how modern browsers’ classList API streamlines dynamic styling by replacing brittle className string manipulation with fast, readable methods to add, remove, and toggle CSS classes; with button and interactive nav examples, it shows how classList boosts performance and clarity, making responsive states and animations straightforward via add(), remove(), and toggle().
Practical guide to CSS-generated content with ::before and ::after: shows how pseudo-elements insert content via the content property before/after elements, can be styled like regular nodes, and enable UI flourishes—from labels and Unicode icons to breadcrumbs/menus. Covers syntax, styling, hover/focus combos, and best practices for clean, maintainable, creative effects.
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