Use this CSS reference to browse an alphabetical index of all the standard CSS properties, pseudo-classes, pseudo-elements, data types, and at-rules. You can also browse a list of all the CSS selectors organized by type and a list of key CSS concepts. Also included is a brief DOM-CSS / CSSOM reference.
selectorlist { property: value; [more property:value; pairs] } ... where selectorlist is: selector[:pseudo-class] [::pseudo-element] [, more selectorlists] See selector, pseudo-class, pseudo-element lists below.
strong { color: red; } div.menu-bar li:hover > ul { display: block; }
For a beginner-level introduction to the syntax of CSS selectors, please see this tutorial. Be aware that any CSS syntax error in a rule definition invalidates the entire rule. Invalid rules are ignored by the browser. Note that CSS rule definitions are entirely (ASCII) text-based, whereas DOM-CSS / CSSOM (the rule management system) is object-based.
As the structure of at-rules varies widely, please see At-rule to find the syntax of the specific one you want.
Note: The property names in this index do not include the JavaScript names where they differ from the CSS standard names.
:active
additive-symbols (@counter-style)
::after (:after)
align-content
align-items
align-self
all
<an-plus-b>
<angle>
animation
animation-delay
animation-direction
animation-duration
animation-fill-mode
animation-iteration-count
animation-name
animation-play-state
animation-timing-function
@annotation
annotation()
attr()
::backdrop
backface-visibility
background
background-attachment
background-blend-mode
background-clip
background-color
background-image
background-origin
background-position
background-repeat
background-size
<basic-shape>
::before (:before)
<blend-mode>
block-size
blur()
border
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-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-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-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
@bottom-center
box-decoration-break
box-shadow
box-sizing
break-after
break-before
break-inside
brightness()
calc()
caption-side
caret-color
ch
@character-variant
character-variant()
@charset
:checked
circle()
clamp()
clear
clip
clip-path
cm
<color>
color
color-adjust
column-count
column-fill
column-gap
column-rule
column-rule-color
column-rule-style
column-rule-width
column-span
column-width
columns
content
contrast()
<counter>
counter-increment
counter-reset
@counter-style
cross-fade()
cubic-bezier()
::cue
cursor
<custom-ident>
:default
deg
:dir
direction
:disabled
display
<display-box>
<display-inside>
<display-internal>
<display-legacy>
<display-listitem>
<display-outside>
dpcm
dpi
dppx
drop-shadow()
fallback (@counter-style)
filter
<filter-function>
:first
:first-child
::first-letter (:first-letter)
::first-line (:first-line)
:first-of-type
fit-content()
<flex>
flex
flex-basis
flex-direction
flex-flow
flex-grow
flex-shrink
flex-wrap
float
:focus
font
@font-face
font-family
font-family (@font-face)
font-feature-settings
font-feature-settings (@font-face)
@font-feature-values
font-kerning
font-language-override
font-optical-sizing
font-size
font-size-adjust
font-stretch
font-stretch (@font-face)
font-style
font-style (@font-face)
font-synthesis
font-variant
font-variant (@font-face)
font-variant-alternates
font-variant-caps
font-variant-east-asian
font-variant-ligatures
font-variant-numeric
font-variant-position
font-variation-settings (@font-face)
font-weight
font-weight (@font-face)
format()
fr
frames()
<frequency>
:fullscreen
gap
grad
<gradient>
grayscale()
grid
grid-area
grid-auto-columns
grid-auto-flow
grid-auto-rows
grid-column
grid-column-end
grid-column-start
grid-row
grid-row-end
grid-row-start
grid-template
grid-template-areas
grid-template-columns
grid-template-rows
Hz
hanging-punctuation
height
height (@viewport)
@historical-forms
:hover
hsl()
hsla()
hue-rotate()
hyphens
<ident>
<image>
image()
image-orientation
image-rendering
image-set()
@import
in
:in-range
:indeterminate
inherit
initial
inline-size
inset
inset()
inset-block
inset-block-end
inset-block-start
inset-inline
inset-inline-end
inset-inline-start
<integer>
:invalid
invert()
isolation
:lang
:last-child
:last-of-type
leader()
:left
left
@left-bottom
<length>
letter-spacing
line-break
line-height
linear-gradient()
:link
list-style
list-style-image
list-style-position
list-style-type
local()
margin
margin-block-end
margin-block-start
margin-bottom
margin-inline-end
margin-inline-start
margin-left
margin-right
margin-top
mask
mask-clip
mask-composite
mask-image
mask-mode
mask-origin
mask-position
mask-repeat
mask-size
mask-type
:matches
matrix()
matrix3d()
max()
max-height
max-height (@viewport)
max-width
max-width (@viewport)
max-zoom (@viewport)
@media
min()
min-block-size
min-height
min-height (@viewport)
min-inline-size
min-width
min-width (@viewport)
min-zoom (@viewport)
minmax()
mix-blend-mode
mm
ms
@namespace
negative (@counter-style)
:not
:nth-child
:nth-last-child
:nth-last-of-type
:nth-of-type
<number>
object-fit
object-position
:only-child
:only-of-type
opacity
opacity()
:optional
order
orientation (@viewport)
@ornaments
ornaments()
orphans
:out-of-range
outline
outline-color
outline-offset
outline-style
outline-width
overflow
overflow-wrap
overflow-x
overflow-y
pad (@counter-style)
padding
padding-block-end
padding-block-start
padding-bottom
padding-inline-end
padding-inline-start
padding-left
padding-right
padding-top
@page
page-break-after
page-break-before
page-break-inside
pc
<percentage>
perspective
perspective()
perspective-origin
place-content
place-items
::placeholder
pointer-events
polygon()
<position>
position
prefix (@counter-style)
pt
px
rad
radial-gradient()
range (@counter-style)
<ratio>
:read-only
:read-write
rect()
rem
repeat()
repeating-linear-gradient()
repeating-radial-gradient()
:required
resize
<resolution>
revert
rgb()
rgba()
:right
right
@right-bottom
:root
rotate
rotate()
rotate3d()
rotateX()
rotateY()
rotateZ()
row-gap
s
saturate()
scale
scale()
scale3d()
scaleX()
scaleY()
scaleZ()
:scope
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-stop
scroll-snap-type
scrollbar-color
scrollbar-width
::selection
sepia()
<shape>
shape-image-threshold
shape-margin
shape-outside
skew()
skewX()
skewY()
::slotted
speak-as (@counter-style)
src (@font-face)
steps()
<string>
@styleset
styleset()
@stylistic
stylistic()
suffix (@counter-style)
@supports
@swash
swash()
symbols (@counter-style)
symbols()
system (@counter-style)
tab-size
table-layout
:target
target-counter()
target-counters()
target-text()
text-align
text-align-last
text-combine-upright
text-decoration
text-decoration-color
text-decoration-line
text-decoration-style
text-emphasis
text-emphasis-color
text-emphasis-position
text-emphasis-style
text-indent
text-justify
text-orientation
text-overflow
text-rendering
text-shadow
text-transform
text-underline-position
<time>
<timing-function>
top
@top-center
touch-action
transform
transform-box
<transform-function>
transform-origin
transform-style
transition
transition-delay
transition-duration
transition-property
transition-timing-function
translate
translate()
translate3d()
translateX()
translateY()
translateZ()
turn
white-space
widows
width
width (@viewport)
will-change
word-break
word-spacing
word-wrap
writing-mode
elementname
.classname
#idname
*
, ns|*
, *|*
, |*
[attr=value]
A + B
A ~ B
A > B
A B
A || B
:active
:any-link
:blank
:checked
:current
:default
:defined
:dir()
:disabled
:drop
:empty
:enabled
:first
:first-child
:first-of-type
:fullscreen
:future
:focus
:focus-visible
:focus-within
:has()
:host
:host()
:host-context()
:hover
:indeterminate
:in-range
:invalid
:is()
:lang()
:last-child
:last-of-type
:left
:link
:local-link
:not()
:nth-child()
:nth-col()
:nth-last-child()
:nth-last-col()
:nth-last-of-type()
:nth-of-type()
:only-child
:only-of-type
:optional
:out-of-range
:past
:placeholder-shown
:read-only
:read-write
:required
:right
:root
:scope
:target
:target-within
:user-invalid
:valid
:visited
:where()
See also: A complete list of selectors in the Selectors Level 3 specification.
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)-webkit-
)-ms-
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© 2005–2018 Mozilla Developer Network and individual contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Reference