Frontend 路 Intern to senior

CSS Interview Questions and Answers

CSS interviews check that you can build and debug layouts without guessing: how the box model and specificity work, when to use Flexbox or Grid, and how positioning and units behave.

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  • HTMLMedium

    How does the browser render a web page?

    The browser parses HTML into a DOM and CSS into a CSSOM, combines them into a render tree, computes layout (reflow), paints pixels and composites layers onto the screen.

    Mid-level 路 Senior 路 Browser & DOM
  • HTMLHard

    What are Core Web Vitals and how do you improve them?

    Core Web Vitals are Google鈥檚 field metrics for real-user experience: LCP (loading), INP (interactivity) and CLS (visual stability). They influence search ranking and are measured on real devices, not only Lighthouse.

    Senior 路 Performance