HTML & CSS What is the difference between id and class in HTML? How do you make a responsive webpage? What is the box model in CSS? How do you center a div? What’s the difference between position: absolute, relative, and fixed? JavaScript What is the difference between var, let, and const? What is a closure in JavaScript? How does event bubbling work? What is the difference between == and ===? What is hoisting in JavaScript? General Frontend What is the role of a frontend developer? How does the DOM work? What is the difference between localStorage and sessionStorage? What tools or libraries have you used in frontend development? How do you optimize a webpage for performance? React (if applicable) What are props and state? What is a React hook? What’s the difference between useEffect and useLayoutEffect? How do you lift state up in React? What is JSX?