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How to read the browser support, version, prefix and category shown on each feature card.

Browser support status

Each feature card shows one panel per target browser. The colour and icon tell you how the feature can be used in that browser.

  • Supported

    Browser

    v120+
    2023-12-05

    Usable as-is, with no vendor prefix and no fallback notation.

  • Partially supported

    Browser

    Prefixed
    from v9
    -webkit-backdrop-filter

    Not usable under its standard name, but usable through the prefixed or fallback notation shown on the panel.

Version and release date

A supported panel shows the version the feature landed in and when that version shipped.

v120+
Usable from this version onwards.
2023-12-05
The release date of that version.

Prefixed and fallback notations

When a browser needs a different notation to use the feature, the panel lists it with the versions it applies to.

Prefixed
A vendor-prefixed notation, such as -webkit-backdrop-filter.
Fallback
An older or alternative name for the same feature, such as word-wrap for overflow-wrap.
from v9
The notation works from this version onwards and has not been removed.
v4 - v6
The notation only works in this range; it was removed in the later version.

Category

The badge next to a feature name tells you what kind of CSS syntax it is.

property
A CSS property, such as accent-color.
at-rule
An at-rule, such as @container.
selector
A selector, such as :has().
type
A value type or function, such as color() or clamp().