CSS (Cascading Style Sheets) is used to style and layout HTML elements, controlling colors, fonts, spacing, positioning, and responsive design.

What is the CSS Box Model?

The Box Model consists of content, padding, border, and margin. It defines the space around HTML elements and how they are calculated for sizing.

Flexbox is a CSS layout module that provides an efficient way to arrange, distribute, and align items in one-dimensional layouts with flexible sizing.

CSS Interview Questions

331. What are style recalculation bottlenecks in very large DOM trees?

332. How do browsers optimize descendant selector evaluation?

333. What internal browser heuristics determine layout invalidation?

334. How do incremental layout calculations work in rendering engines?

335. What are advanced browser paint scheduling strategies?

336. How do browsers coordinate CSS animations with rendering frames?

337. What timing synchronization issues occur in animation-heavy applications?

338. How would you debug intermittent frame drops caused by CSS rendering?

339. What GPU bottlenecks commonly occur in visually complex interfaces?

340. How do browsers manage texture memory for composited layers?