<style> element
2.2CSS classes
2.3Inline CSS using style=""
2.4Inheritence and specificity
2.5The box model
2.6The position property
2.7Units
2.8Colors
2.9Styling text
2.10Importing fonts
2.11Basic interactivity using :hover and :active states
2.12Animation using @keyframes
2.13Flexbox
2.14Grid
2.15Responsive design using @media queries