 *known
		// media types
all
aural
braille
handheld
print
projection
screen
tty
tv
embossed
		// media features
width
min-width
max-width
height
min-height
max-height
device-width
min-device-width
max-device-width
device-height
min-device-height
max-device-height
aspect-ratio
min-aspect-ratio
max-aspect-ratio
device-aspect-ratio
min-device-aspect-ratio
max-device-aspect-ratio
color
min-color
max-color
color-index
min-color-index
max-color-index
monochrome
min-monochrome
max-monochrome
resolution
min-resolution
max-resolution
scan
grid
orientation
device-pixel-ratio
min-device-pixel-ratio
max-device-pixel-ratio
pointer
any-pointer
hover
any-hover
		// media value keywords
landscape
portrait
none
coarse
fine
on-demand
hover
interlace
progressive
		// property keywords
align-content
align-items
align-self
alignment-adjust
alignment-baseline
anchor-point
animation
animation-delay
animation-direction
animation-duration
animation-fill-mode
animation-iteration-count
animation-name
animation-play-state
animation-timing-function
appearance
azimuth
backdrop-filter
backface-visibility
background
background-attachment
background-blend-mode
background-clip
background-color
background-image
background-origin
background-position
background-position-x
background-position-y
background-repeat
background-size
baseline-shift
binding
bleed
block-size
bookmark-label
bookmark-level
bookmark-state
bookmark-target
border
border-bottom
border-bottom-color
border-bottom-left-radius
border-bottom-right-radius
border-bottom-style
border-bottom-width
border-collapse
border-color
border-image
border-image-outset
border-image-repeat
border-image-slice
border-image-source
border-image-width
border-left
border-left-color
border-left-style
border-left-width
border-radius
border-right
border-right-color
border-right-style
border-right-width
border-spacing
border-style
border-top
border-top-color
border-top-left-radius
border-top-right-radius
border-top-style
border-top-width
border-width
bottom
box-decoration-break
box-shadow
box-sizing
break-after
break-before
break-inside
caption-side
caret-color
clear
clip
color
color-profile
column-count
column-fill
column-gap
column-rule
column-rule-color
column-rule-style
column-rule-width
column-span
column-width
columns
contain
content
counter-increment
counter-reset
crop
cue
cue-after
cue-before
cursor
direction
display
dominant-baseline
drop-initial-after-adjust
drop-initial-after-align
drop-initial-before-adjust
drop-initial-before-align
drop-initial-size
drop-initial-value
elevation
empty-cells
fit
fit-position
flex
flex-basis
flex-direction
flex-flow
flex-grow
flex-shrink
flex-wrap
float
float-offset
flow-from
flow-into
font
font-family
font-feature-settings
font-kerning
font-language-override
font-optical-sizing
font-size
font-size-adjust
font-stretch
font-style
font-synthesis
font-variant
font-variant-alternates
font-variant-caps
font-variant-east-asian
font-variant-ligatures
font-variant-numeric
font-variant-position
font-variation-settings
font-weight
gap
grid
grid-area
grid-auto-columns
grid-auto-flow
grid-auto-rows
grid-column
grid-column-end
grid-column-gap
grid-column-start
grid-gap
grid-row
grid-row-end
grid-row-gap
grid-row-start
grid-template
grid-template-areas
grid-template-columns
grid-template-rows
hanging-punctuation
height
hyphens
icon
image-orientation
image-rendering
image-resolution
inline-box-align
inset
inset-block
inset-block-end
inset-block-start
inset-inline
inset-inline-end
inset-inline-start
isolation
justify-content
justify-items
justify-self
left
letter-spacing
line-break
line-height
line-height-step
line-stacking
line-stacking-ruby
line-stacking-shift
line-stacking-strategy
list-style
list-style-image
list-style-position
list-style-type
margin
margin-bottom
margin-left
margin-right
margin-top
marks
marquee-direction
marquee-loop
marquee-play-count
marquee-speed
marquee-style
max-block-size
max-height
max-inline-size
max-width
min-block-size
min-height
min-inline-size
min-width
mix-blend-mode
move-to
nav-down
nav-index
nav-left
nav-right
nav-up
object-fit
object-position
offset
offset-anchor
offset-distance
offset-path
offset-position
offset-rotate
opacity
order
orphans
outline
outline-color
outline-offset
outline-style
outline-width
overflow
overflow-style
overflow-wrap
overflow-x
overflow-y
padding
padding-bottom
padding-left
padding-right
padding-top
page
page-break-after
page-break-before
page-break-inside
page-policy
pause
pause-after
pause-before
perspective
perspective-origin
pitch
pitch-range
place-content
place-items
place-self
play-during
position
presentation-level
punctuation-trim
quotes
region-break-after
region-break-before
region-break-inside
region-fragment
rendering-intent
resize
rest
rest-after
rest-before
richness
right
rotate
rotation
rotation-point
row-gap
ruby-align
ruby-overhang
ruby-position
ruby-span
scale
scroll-behavior
scroll-margin
scroll-margin-block
scroll-margin-block-end
scroll-margin-block-start
scroll-margin-bottom
scroll-margin-inline
scroll-margin-inline-end
scroll-margin-inline-start
scroll-margin-left
scroll-margin-right
scroll-margin-top
scroll-padding
scroll-padding-block
scroll-padding-block-end
scroll-padding-block-start
scroll-padding-bottom
scroll-padding-inline
scroll-padding-inline-end
scroll-padding-inline-start
scroll-padding-left
scroll-padding-right
scroll-padding-top
scroll-snap-align
scroll-snap-type
shape-image-threshold
shape-inside
shape-margin
shape-outside
size
speak
speak-as
speak-header
speak-numeral
speak-punctuation
speech-rate
stress
string-set
tab-size
table-layout
target
target-name
target-new
target-position
text-align
text-align-last
text-combine-upright
text-decoration
text-decoration-color
text-decoration-line
text-decoration-skip
text-decoration-skip-ink
text-decoration-style
text-emphasis
text-emphasis-color
text-emphasis-position
text-emphasis-style
text-height
text-indent
text-justify
text-orientation
text-outline
text-overflow
text-rendering
text-shadow
text-size-adjust
text-space-collapse
text-transform
text-underline-position
text-wrap
top
transform
transform-origin
transform-style
transition
transition-delay
transition-duration
transition-property
transition-timing-function
translate
unicode-bidi
user-select
vertical-align
visibility
voice-balance
voice-duration
voice-family
voice-pitch
voice-range
voice-rate
voice-stress
voice-volume
volume
white-space
widows
width
will-change
word-break
word-spacing
word-wrap
writing-mode
z-index
		// SVG-specific
clip-path
clip-rule
mask
enable-background
filter
flood-color
flood-opacity
lighting-color
stop-color
stop-opacity
pointer-events
color-interpolation
color-interpolation-filters
color-rendering
fill
fill-opacity
fill-rule
image-rendering
marker
marker-end
marker-mid
marker-start
shape-rendering
stroke
stroke-dasharray
stroke-dashoffset
stroke-linecap
stroke-linejoin
stroke-miterlimit
stroke-opacity
stroke-width
text-rendering
baseline-shift
dominant-baseline
glyph-orientation-horizontal
glyph-orientation-vertical
text-anchor
writing-mode
		// non standard property keywords
border-block
border-block-color
border-block-end
border-block-end-color
border-block-end-style
border-block-end-width
border-block-start
border-block-start-color
border-block-start-style
border-block-start-width
border-block-style
border-block-width
border-inline
border-inline-color
border-inline-end
border-inline-end-color
border-inline-end-style
border-inline-end-width
border-inline-start
border-inline-start-color
border-inline-start-style
border-inline-start-width
border-inline-style
border-inline-width
margin-block
margin-block-end
margin-block-start
margin-inline
margin-inline-end
margin-inline-start
padding-block
padding-block-end
padding-block-start
padding-inline
padding-inline-end
padding-inline-start
scroll-snap-stop
scrollbar-3d-light-color
scrollbar-arrow-color
scrollbar-base-color
scrollbar-dark-shadow-color
scrollbar-face-color
scrollbar-highlight-color
scrollbar-shadow-color
scrollbar-track-color
searchfield-cancel-button
searchfield-decoration
searchfield-results-button
searchfield-results-decoration
shape-inside
zoom
		// font properties
font-display
font-family
src
unicode-range
font-variant
font-feature-settings
font-stretch
font-weight
font-style
		// counter descriptors
additive-symbols
fallback
negative
pad
prefix
range
speak-as
suffix
symbols
system
		// color keywords
aliceblue
antiquewhite
aqua
aquamarine
azure
beige
bisque
black
blanchedalmond
blue
blueviolet
brown
burlywood
cadetblue
chartreuse
chocolate
coral
cornflowerblue
cornsilk
crimson
cyan
darkblue
darkcyan
darkgoldenrod
darkgray
darkgreen
darkkhaki
darkmagenta
darkolivegreen
darkorange
darkorchid
darkred
darksalmon
darkseagreen
darkslateblue
darkslategray
darkturquoise
darkviolet
deeppink
deepskyblue
dimgray
dodgerblue
firebrick
floralwhite
forestgreen
fuchsia
gainsboro
ghostwhite
gold
goldenrod
gray
grey
green
greenyellow
honeydew
hotpink
indianred
indigo
ivory
khaki
lavender
lavenderblush
lawngreen
lemonchiffon
lightblue
lightcoral
lightcyan
lightgoldenrodyellow
lightgray
lightgreen
lightpink
lightsalmon
lightseagreen
lightskyblue
lightslategray
lightsteelblue
lightyellow
lime
limegreen
linen
magenta
maroon
mediumaquamarine
mediumblue
mediumorchid
mediumpurple
mediumseagreen
mediumslateblue
mediumspringgreen
mediumturquoise
mediumvioletred
midnightblue
mintcream
mistyrose
moccasin
navajowhite
navy
oldlace
olive
olivedrab
orange
orangered
orchid
palegoldenrod
palegreen
paleturquoise
palevioletred
papayawhip
peachpuff
peru
pink
plum
powderblue
purple
rebeccapurple
red
rosybrown
royalblue
saddlebrown
salmon
sandybrown
seagreen
seashell
sienna
silver
skyblue
slateblue
slategray
snow
springgreen
steelblue
tan
teal
thistle
tomato
turquoise
violet
wheat
white
whitesmoke
yellow
yellowgreen
		// value keywords
above
absolute
activeborder
additive
activecaption
afar
after-white-space
ahead
alias
all
all-scroll
alphabetic
alternate
always
amharic
amharic-abegede
antialiased
appworkspace
arabic-indic
armenian
asterisks
attr
auto
auto-flow
avoid
avoid-column
avoid-page
avoid-region
background
backwards
baseline
below
bidi-override
binary
bengali
blink
block
block-axis
bold
bolder
border
border-box
both
bottom
break
break-all
break-word
bullets
button
button-bevel
buttonface
buttonhighlight
buttonshadow
buttontext
calc
cambodian
capitalize
caps-lock-indicator
caption
captiontext
caret
cell
center
checkbox
circle
cjk-decimal
cjk-earthly-branch
cjk-heavenly-stem
cjk-ideographic
clear
clip
close-quote
col-resize
collapse
color
color-burn
color-dodge
column
column-reverse
compact
condensed
contain
content
contents
content-box
context-menu
continuous
copy
counter
counters
cover
crop
cross
crosshair
currentcolor
cursive
cyclic
darken
dashed
decimal
decimal-leading-zero
default
default-button
dense
destination-atop
destination-in
destination-out
destination-over
devanagari
difference
disc
discard
disclosure-closed
disclosure-open
document
dot-dash
dot-dot-dash
dotted
double
down
e-resize
ease
ease-in
ease-in-out
ease-out
element
ellipse
ellipsis
embed
end
ethiopic
ethiopic-abegede
ethiopic-abegede-am-et
ethiopic-abegede-gez
ethiopic-abegede-ti-er
ethiopic-abegede-ti-et
ethiopic-halehame-aa-er
ethiopic-halehame-aa-et
ethiopic-halehame-am-et
ethiopic-halehame-gez
ethiopic-halehame-om-et
ethiopic-halehame-sid-et
ethiopic-halehame-so-et
ethiopic-halehame-ti-er
ethiopic-halehame-ti-et
ethiopic-halehame-tig
ethiopic-numeric
ew-resize
exclusion
expanded
extends
extra-condensed
extra-expanded
fantasy
fast
fill
fixed
flat
flex
flex-end
flex-start
footnotes
forwards
from
geometricPrecision
georgian
graytext
grid
groove
gujarati
gurmukhi
hand
hangul
hangul-consonant
hard-light
hebrew
help
hidden
hide
higher
highlight
highlighttext
hiragana
hiragana-iroha
horizontal
hsl
hsla
hue
icon
ignore
inactiveborder
inactivecaption
inactivecaptiontext
infinite
infobackground
infotext
inherit
initial
inline
inline-axis
inline-block
inline-flex
inline-grid
inline-table
inset
inside
intrinsic
invert
italic
japanese-formal
japanese-informal
justify
kannada
katakana
katakana-iroha
keep-all
khmer
korean-hangul-formal
korean-hanja-formal
korean-hanja-informal
landscape
lao
large
larger
left
level
lighter
lighten
line-through
linear
linear-gradient
lines
list-item
listbox
listitem
local
logical
loud
lower
lower-alpha
lower-armenian
lower-greek
lower-hexadecimal
lower-latin
lower-norwegian
lower-roman
lowercase
ltr
luminosity
malayalam
match
matrix
matrix3d
media-controls-background
media-current-time-display
media-fullscreen-button
media-mute-button
media-play-button
media-return-to-realtime-button
media-rewind-button
media-seek-back-button
media-seek-forward-button
media-slider
media-sliderthumb
media-time-remaining-display
media-volume-slider
media-volume-slider-container
media-volume-sliderthumb
medium
menu
menulist
menulist-button
menulist-text
menulist-textfield
menutext
message-box
middle
min-intrinsic
mix
mongolian
monospace
move
multiple
multiply
myanmar
n-resize
narrower
ne-resize
nesw-resize
no-close-quote
no-drop
no-open-quote
no-repeat
none
normal
not-allowed
nowrap
ns-resize
numbers
numeric
nw-resize
nwse-resize
oblique
octal
opacity
open-quote
optimizeLegibility
optimizeSpeed
oriya
oromo
outset
outside
outside-shape
overlay
overline
padding
padding-box
painted
page
paused
persian
perspective
plus-darker
plus-lighter
pointer
polygon
portrait
pre
pre-line
pre-wrap
preserve-3d
progress
push-button
radial-gradient
radio
read-only
read-write
read-write-plaintext-only
rectangle
region
relative
repeat
repeating-linear-gradient
repeating-radial-gradient
repeat-x
repeat-y
reset
reverse
rgb
rgba
ridge
right
rotate
rotate3d
rotateX
rotateY
rotateZ
round
row
row-resize
row-reverse
rtl
run-in
running
s-resize
sans-serif
saturation
scale
scale3d
scaleX
scaleY
scaleZ
screen
scroll
scrollbar
scroll-position
se-resize
searchfield
searchfield-cancel-button
searchfield-decoration
searchfield-results-button
searchfield-results-decoration
self-start
self-end
semi-condensed
semi-expanded
separate
serif
show
sidama
simp-chinese-formal
simp-chinese-informal
single
skew
skewX
skewY
skip-white-space
slide
slider-horizontal
slider-vertical
sliderthumb-horizontal
sliderthumb-vertical
slow
small
small-caps
small-caption
smaller
soft-light
solid
somali
source-atop
source-in
source-out
source-over
space
space-around
space-between
space-evenly
spell-out
square
square-button
start
static
status-bar
stretch
stroke
sub
subpixel-antialiased
super
sw-resize
symbolic
symbols
system-ui
table
table-caption
table-cell
table-column
table-column-group
table-footer-group
table-header-group
table-row
table-row-group
tamil
telugu
text
text-bottom
text-top
textarea
textfield
thai
thick
thin
threeddarkshadow
threedface
threedhighlight
threedlightshadow
threedshadow
tibetan
tigre
tigrinya-er
tigrinya-er-abegede
tigrinya-et
tigrinya-et-abegede
to
top
trad-chinese-formal
trad-chinese-informal
transform
translate
translate3d
translateX
translateY
translateZ
transparent
ultra-condensed
ultra-expanded
underline
unset
up
upper-alpha
upper-armenian
upper-greek
upper-hexadecimal
upper-latin
upper-norwegian
upper-roman
uppercase
urdu
url
var
vertical
vertical-text
visible
visibleFill
visiblePainted
visibleStroke
visual
w-resize
wait
wave
wider
window
windowframe
windowtext
words
wrap
wrap-reverse
x-large
x-small
xor
xx-large
xx-small