Modern CSS

4 lessons in the CSS course.

Full CSS course · Search this topic · Web

• CSS VariablesDefine reusable custom properties, local overrides, fallbacks, and design tokens.
• TransitionsAnimate state changes with focused transitions that respect motion preferences.
• Hover and Focus StatesDesign clear interaction feedback for pointer, keyboard, and touch users.
• SpecificityPredict which declaration wins and keep the cascade easy to maintain.