New on the CSS Baseline

Last updated 24 August 2026

CSS features that recently reached Newly available status. They now work across the latest versions of every major browser. Each links to its reference entry. To check your own CSS against Baseline, use the CSS Baseline Checker.

2026

::highlight

:active-view-transition

:active-view-transition-type

:open

@container style()

@scope

<rcap>

<rch>

<rex>

<ric>

<sibling-count>

<sibling-index>

baseline-shift

contrast-color()

field-sizing

shape()

2025

::details-content

::grammar-error

::spelling-error

::view-transition-group

::view-transition-image-pair

::view-transition-new

::view-transition-old

:popover-open

<abs>

<sign>

content-visibility

print-color-adjust

scrollbar-color

view-transition-class

view-transition-name

2024

::target-text

:state()

@page

@property

@starting-style

<mod>

<round>

backdrop-filter

font-size-adjust

light-dark()

paint-order

ruby-align

ruby-position

scrollbar-gutter

scrollbar-width

text-wrap

transform-box

transition-behavior

white-space-collapse

zoom