Modern CSS in 2025: 6 Snippets You Should Know

Published on 18.12.2025

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6 CSS Snippets Every Front-End Developer Should Know In 2025

TLDR: This article presents six powerful CSS snippets that every front-end developer should know in 2025. These snippets cover new features like view transitions, linear() easing, typed custom properties, and animations for <dialog>, [popover], and <details>.

6 CSS Snippets Every Front-End Developer Should Know In 2025

What You Need to Know about Modern CSS (2025 Edition)

TLDR: This article provides a comprehensive overview of the most important new features in CSS for 2025. It covers everything from animating to auto, popovers and invokers, custom functions with @function, and the new if() function.

What You Need to Know about Modern CSS (2025 Edition)

Default styles for h1 elements are changing

TLDR: Browsers are starting to remove the default UA styles that change the font size of <h1> elements based on how deeply they are nested within sectioning elements. Developers should check their sites to make sure they are not relying on these default styles.

Default styles for h1 elements are changing | MDN Blog