Modern CSS techniques in 2025 go beyond Flexbox and Grid, offering powerful options for dynamic, responsive, and interactive UI design.
New features like :has(), @layer, accent-color, container queries, and more enable developers to enhance styling and functionality without JavaScript.
These techniques include parent selectors, layering for styling organization, customizing form controls, smarter responsive design, scroll-based animations, and simplified selector styling.
Modern CSS also allows for native custom animations, smoother transitions, and the trendy glassmorphism effect, revolutionizing web development in 2025.