• flexbox vs CSS grid comparison
• CSS selector specificity
• Semantic HTML
• CSS flexbox layout
• CSS display property
• CSS position property
• What is the DOM?
• CSS grid layout
• Difference between script, async and defer
• Web accessibility and ARIA attributes
• CSS variables (custom properties)
• Why transform is better for animations than top, left
• CSS units: px, rem, em
• What is responsive web design
• CSS properties for creating animations and smooth transitions
• CSS pseudo-classes and pseudo-elements
• Why media queries are needed in CSS
• CSS z-index and stacking context
• CSS box-sizing property
• CSS selectors
• What is BEM methodology (block element modifier)
• What is cascade in CSS
• How to hide elements visually but keep them accessible to screen readers
• CSS functions: calc(), clamp(), min(), max()
• CSS preprocessors: SASS, SCSS, and LESS
• Responsive images: picture, srcset and sizes
• Methods for style isolation in CSS
• Html5 new features and apis
• Block, inline and inline-block elements in HTML & CSS
• Difference between visibility: hidden and display: none