Category: HTML & CSS

68 questions in HTML & CSS.

How to use CSS @layer to organize stylesheets

January 25, 2026 · HTML & CSS

Learn how CSS cascade layers help you manage specificity conflicts and organize styles from frameworks, themes, and components.

January 22, 2026 · HTML & CSS

Build accessible data tables using semantic HTML elements like thead, tbody, th, scope, and caption for screen reader compatibility.

January 19, 2026 · HTML & CSS

Understand when to use rem versus em in CSS for predictable, scalable, and maintainable typography and spacing.

January 16, 2026 · HTML & CSS

Build a maintainable dark mode toggle using CSS custom properties, prefers-color-scheme, and local storage persistence.

January 13, 2026 · HTML & CSS

Explore the CSS :has() pseudo-class for parent selection, complex conditional styling, and sibling-aware layouts.

January 11, 2026 · HTML & CSS

Learn techniques to customize the appearance of HTML5 form validation messages and error states using CSS pseudo-classes.

January 08, 2026 · HTML & CSS

Understand CSS Grid auto-placement algorithms and how to control item placement with grid-auto-flow and implicit tracks.

January 05, 2026 · HTML & CSS

Learn how to build a responsive navigation bar using CSS Flexbox with mobile-friendly hamburger menus and accessible markup.

September 03, 2025 · HTML & CSS

Use Storybook to build an interactive library of CSS components, document usage, and test visual regressions.

August 30, 2025 · HTML & CSS

Create a scalable design token system using CSS custom properties, JSON, or Style Dictionary for consistent theming.