May 2026

CSS properties that became available in major browsers in May 2026.

open

selector
MDN Document
Browser Support

  • Chrome

    v133+
    2025-02-04

  • Edge

    v133+
    2025-02-06

  • Safari

    v26.5+
    2026-05-11

  • Safari (iOS)

    v26.5+
    2026-05-11

  • Firefox

    v136+
    2025-03-04