# CSS: Why ch Units Are Replacing px in Modern Web Design

A popular Hacker News discussion highlights a shift in web development from using pixel (px) units to character (ch) units in CSS. The article argues that ch units, based on the width of the "0" character, offer better responsive scaling and accessibility for text-based layouts. This matters because adopting ch can improve readability and maintain consistent proportions across different devices and font settings.

**Importance:** 3/5

## Sources

### Technology
- [Hacker News](https://shkspr.mobi/blog/2026/08/death-to-px-long-live-ch/) — Sun, 23 Aug 2026 13:56:27 +0000