Single-axis scroll has been adopted into the CSS spec and will be supported in Chromium soon
Summary
The blog post explains that the CSS specification has adopted single-axis scroll containers to solve the long-standing issue of sticky headers inside overflow-scrolling containers. It describes how overflow-x: scroll and overflow-y: clip enable position: sticky for headers in wide data tables, notes Chrome is already testing the feature in Canary/Dev/Beta with a planned Chrome 156 release, while Firefox and Safari support are still in progress, and provides testing guidance and practical examples.