SAFARI TECHNOLOGY PREVIEW. UPDATE

Implemented logical properties for CSS overscroll-behavior (r290422).Implemented text-decoration as a shorthand (r290756, r291244).Fixed positioning of position: absolute items within nested grids (r290674).Fixed subgrid items to always be stretched (r291464).Handled reverse flow direction when converting iterator coords for a subgrid (r290572).

Converted grid direction to be relative to subgrid when accounting for extra margin (r290576).

Fixed computing the correct containing block override size for items that are subgridded in one dimension only (r290577).

Let revert-layer in the lowest layer roll back to user styles (r290864).

Fixed revert on low-priority properties (r291260).

Added support for revert-layer in (r290729).

Implemented new container selection algorithm (r291098).

SAFARI TECHNOLOGY PREVIEW. UPDATE

Fixed offsetWidth, offsetHeight, and similar to update layout for container queries (r290380).

Fixed getComputedStyle to update the style for invalid query containers (r290320).

Ensured container style changes are propagated to descendants (r291500).

Changed to only apply inline-size containment when it is allowed (r291154).

Added basic support for container units (r291474).

Added support for nested container queries (r290257).

Service workers are no longer terminated while they are being inspected.

○ Added option in the Layout panel of the Details Sidebar for Flexbox overlays to show each item's CSS order and/or DOM index in the parent flex container (r290613)

Note: Tab Groups do not sync in this release. Safari Technology Preview offers a sneak peek at upcoming web technologies in macOS and iOS and lets you and experiment with these technologies in your websites and extensions.

Apple has released Safari Technology Preview 143 for macOS Monterey and macOS Big Sur.

Safari technology preview.