New on the CSS Baseline
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.
2026
Newly available2025
Newly available Selector
::details-content
Selector
::view-transition-group
Selector
::view-transition-image-pair
Selector
::view-transition-new
Selector
::view-transition-old
Selector
:popover-open
Property
content-visibility
Property
print-color-adjust
Property
scrollbar-color
Property
view-transition-class
Property
view-transition-name
2024
Newly available Selector
::target-text
Selector
:state()
At-rule
@page
At-rule
@property
At-rule
@starting-style
Type
<cap>
Type
<mod>
Type
<rcap>
Type
<rch>
Type
<rem>
Type
<rex>
Type
<ric>
Type
<round>
Property
backdrop-filter
Property
font-size-adjust
Property
initial-letter
Type
light-dark()
Property
paint-order
Property
ruby-align
Property
ruby-position
Property
scrollbar-gutter
Property
scrollbar-width
Property
text-wrap
Property
text-wrap-mode
Property
text-wrap-style
Property
transform-box
Property
transition-behavior
Property
white-space-collapse
Property
zoom
2023
Newly available Selector
:has()
At-rule
@counter-style
Type
<pow>
Type
<sqrt>
Property
contain-intrinsic-block-size
Property
contain-intrinsic-height
Property
contain-intrinsic-inline-size
Property
contain-intrinsic-size
Property
contain-intrinsic-width
Property
container-type
Property
counter-set
Selector
CSS Nesting (&)
Property
font-palette
Property
hyphenate-character
Property
mask
Property
mask-clip
Property
mask-composite
Property
mask-image
Property
mask-mode
Property
mask-origin
Property
mask-position
Property
mask-repeat
Property