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CSS quotes property - support 'auto' value

Category

CSS

Type

New or changed feature

Status

Enabled by default (Chrome 87)

Intent stage

Shipped

Summary

Support 'auto' for the 'quotes' property. CSS2 specified the initial value for 'quotes' as UA dependent, but WebKit and Blink returns an invalid value (empty string) which will not round-trip. Setting it to the empty string will remove the declaration instead of setting it to the initial value. css-content-3 instead uses an 'auto' keyword for the default UA behavior.

Motivation

Fix brokenness in current implementation and align with spec and Firefox.

Standards & signals

• Specification: https://www.w3.org/TR/css-content-3/#quotes
• Firefox: Shipped/Shipping — Shipped in Firefox 70 according to MDN.
• Safari: Shipped/Shipping — Not responded to reported issue: https://bugs.webkit.org/show_bug.cgi?id=215646
• Web developers: No signals
• Tracking bug: https://crbug.com/990557

View on chromestatus.com