This page lists supported CSS selectors, properties, @-rules, Media queries and values in alphabetical order.
The "supported since" column indicates the Gecko version number in which support was introduced; versions prior to Gecko 1.0 are listed as 1.0.
Gecko is the rendering engine used in Firefox and other applications; please see Gecko for more information about Firefox and Gecko version numbers.
The "specification" column links to one of the specifications in which the feature was first specified. However, in many cases, the feature in also specified, and extended, in newer specifications. The compatibility list in each specific article gives the detail of the specification history.
Mozilla CSS extensions (those prefixed with -moz-) are mentioned in the "Notes" column to provide bug numbers and other hints regarding CSS support.
Warning: Various specifications are still Working Drafts and several properties can be deleted, changed or renamed.
If you think you have found a bug in Mozilla's CSS support, please create a minimal test case and file a bug. Make sure you search through existing bugs first.
This chart refers to the CSS 2.1 Specification and current drafts by the CSS Workgroup.
Selectors
| Selector | Initial specification | Supported by Gecko | Notes |
|---|---|---|---|
| Specification status | Since | ||
| Basic Selectors | |||
Universal Selector * |
The definition of 'universal selector' in that specification. |
Yes | — |
| Recommendation | 1.0 | ||
Type selector element |
CSS Level 1 The definition of 'type selector' in that specification. |
Yes | — |
| Recommendation | 1.0 | ||
Class selector .class |
CSS Level 1 The definition of 'class selector' in that specification. |
Yes | — |
| Recommendation | 1.0 | ||
ID selector #id |
CSS Level 1 The definition of 'ID selector' in that specification. |
Yes | — |
| Recommendation | 1.0 | ||
Attribute selectors [attribute="value"] |
CSS Level 2 (Revision 1) The definition of 'attribute selector' in that specification. |
Yes | — |
| Recommendation | 1.0 | ||
| Combinators | |||
Descendant selector E F |
CSS Level 1 The definition of 'descendant selector' in that specification. |
Yes | — |
| Recommendation | 1.0 | ||
Child selector E > F |
CSS Level 2 (Revision 1) The definition of 'child selector' in that specification. |
Yes | — |
| Recommendation | 1.0 | ||
Adjacent sibling selector E + F |
CSS Level 2 (Revision 1) The definition of 'child selector' in that specification. |
Yes | — |
| Recommendation | 1.0 | ||
General sibling selectors E ~ F |
Selectors Level 3 The definition of 'general sibling selector' in that specification. |
Yes | — |
| Recommendation | 1.0 | ||
| Pseudo-elements | |||
:after (::after) |
CSS 3 (Selectors) | Yes | Syntax with two colons (::) is supported since Gecko 1.5 |
| Recommendation | 1.0 (1.5) | ||
:before (::before) |
CSS 3 (Selectors) | Yes | |
| Recommendation | 1.0 (1.5) | ||
:first-letter (::first-letter) |
CSS 3 (Selectors) | Yes | |
| Recommendation | 1.0 (1.5) | ||
:first-line (::first-line) |
CSS 3 (Selectors) | Yes | |
| Recommendation | 1.0 (1.5) | ||
::selection |
CSS 3 (Selectors) | No | ::-moz-selection is supported since Gecko 1.5 |
| Recommendation | — | ||
| Dynamic pseudo-classes | |||
:link |
CSS 3 (Selectors) | Yes | - |
| Recommendation | 1.0 | ||
:visited |
CSS 3 (Selectors) | Yes | - |
| Recommendation | 1.0 | ||
:active |
CSS 3 (Selectors) | Yes | - |
| Recommendation | 1.0 | ||
:hover |
CSS 3 (Selectors) | Yes | - |
| Recommendation | 1.0 | ||
:focus |
CSS 3 (Selectors) | Yes | - |
| Recommendation | 1.0 | ||
| Structural pseudo-classes | |||
:root |
CSS 3 (Selectors) | Yes | - |
| Recommendation | 1.0 | ||
:empty |
CSS 3 (Selectors) | Yes | Since Gecko 1.8 an element containing spaces no longer matches :empty |
| Recommendation | 1.0 | ||
:first-child |
CSS 3 (Selectors) | Yes | - |
| Recommendation | 1.0 | ||
:last-child |
CSS 3 (Selectors) | Yes | - |
| Recommendation | 1.0 | ||
:only-child |
CSS 3 (Selectors) | Yes | - |
| Recommendation | 1.8 | ||
:first-of-type |
CSS 3 (Selectors) | Yes | - |
| Recommendation | 1.9.1 | ||
:last-of-type |
CSS 3 (Selectors) | Yes | - |
| Recommendation | 1.9.1 | ||
:only-of-type |
CSS 3 (Selectors) | Yes | - |
| Recommendation | 1.9.1 | ||
:nth-child |
CSS 3 (Selectors) | Yes | - |
| Recommendation | 1.9.1 | ||
:nth-last-child |
CSS 3 (Selectors) | Yes | - |
| Recommendation | 1.9.1 | ||
:nth-of-type |
CSS 3 (Selectors) | Yes | - |
| Recommendation | 1.9.1 | ||
:nth-last-of-type |
CSS 3 (Selectors) | Yes | - |
| Recommendation | 1.9.1 | ||
| UI pseudo-classes | |||
:enabled |
CSS 3 (Selectors) | Yes | - |
| Recommendation | 1.1 | ||
:disabled |
CSS 3 (Selectors) | Yes | - |
| Recommendation | 1.1 | ||
:check |
CSS 3 (Selectors) | Yes | - |
| Recommendation | 1.1 | ||
:indeterminate |
CSS 3 (Selectors) | Yes | - |
| Recommendation | 1.9.2 | ||
:default |
CSS 3 (UI) | Yes | - |
| Recommendation | 1.9 | ||
:valid |
CSS 3 (UI) | Yes | - |
| Recommendation | 2.0 | ||
:invalid |
CSS 3 (UI) | Yes | - |
| Recommendation | 2.0 | ||
:in-range |
CSS 3 (UI) | No | - |
| Recommendation | 1.0 | ||
:out-of-range |
CSS 3 (UI) | No | - |
| Recommendation | 1.0 | ||
:required |
CSS 3 (UI) | Yes | - |
| Recommendation | 1.0 | ||
:optional |
CSS 3 (UI) | Yes | - |
| Recommendation | 2.0 | ||
:read-only |
CSS 3 (UI) | No | - |
| Recommendation | 1.0 | ||
:read-write |
CSS 3 (UI) | No | - |
| Recommendation | 1.0 | ||
::value |
CSS 3 (UI) | No | - |
| Recommendation | 1.0 | ||
::choices |
CSS 3 (UI) | No | - |
| Recommendation | 1.0 | ||
::repeat-item |
CSS 3 (UI) | No | - |
| Recommendation | 1.0 | ||
::repeat-index |
CSS 3 (UI) | No | - |
| Recommendation | 1.0 | ||
| Other pseudo-classes | |||
:lang |
CSS 3 (Selectors) | Yes | - |
| Recommendation | 1.2 | ||
:not |
CSS 3 (Selectors) | Yes | - |
| Recommendation | 1.0 | ||
:target |
CSS 3 (Selectors) | Yes | - |
| Recommendation | 1.3 | ||
Properties
| Property | Specification | Supported | Supported since | Notes |
|---|---|---|---|---|
animation |
CSS 3 (Animations) | Yes | 16.0 | -moz-animation is supported since Gecko 5.0. |
animation-delay |
CSS 3 (Animations) | Yes | 16.0 | -moz-animation-delay is supported since Gecko 5.0. |
animation-direction |
CSS 3 (Animations) | Yes | 16.0 | -moz-animation-direction is supported since Gecko 5.0. |
animation-duration |
CSS 3 (Animations) | Yes | 16.0 | -moz-animation-duration is supported since Gecko 5.0. |
animation-fill-mode |
CSS 3 (Animations) | Yes | 16.0 | -moz-animation-fill-mode is supported since Gecko 5.0. |
animation-iteration-count |
CSS 3 (Animations) | Yes | 16.0 | -moz-animation-iteration-count is supported since Gecko 5.0. |
animation-name |
CSS 3 (Animations) | Yes | 16.0 | -moz-animation-name is supported since Gecko 5.0. |
animation-play-state |
CSS 3 (Animations) | Yes | 16.0 | -moz-animation-play-state is supported since Gecko 5.0. |
animation-timing-function |
CSS 3 (Animations) | Yes | 16.0 | -moz-animation-timing-function is supported since Gecko 5.0. |
appearance |
CSS 3 (UI) | No | - | -moz-appearance is supported since Gecko 1.0. |
background |
CSS 3 (Background) | Yes | 1.0 (1.9.2) | Multiple backgrounds are supported since Gecko 1.9.2. |
background-attachment |
CSS 3 (Background) | Yes | 1.0 (1.9.2) | |
background-clip |
CSS 3 (Background) | Yes | 2.0 | -moz-background-clip was supported since Gecko 1.2 till 1.9.2. |
background-color |
CSS 3 (Background) | Yes | 1.0 | - |
background-image |
CSS 3 (Background) | Yes | 1.0 (1.9.2) | Multiple backgrounds are supported since Gecko 1.9.2. |
background-origin |
CSS 3 (Background) | Yes | 2.0 | -moz-background-origin was supported since Gecko 1.2 till 1.9.2. |
background-position |
CSS 3 (Background) | Yes | 1.0 (1.9.2) | Multiple backgrounds are supported since Gecko 1.9.2. |
background-repeat |
CSS 3 (Background) | Yes | 1.0 (1.9.2) | |
background-size |
CSS 3 (Background) | Yes | 2.0 | -moz-background-size was supported in Gecko 1.9.2. |
border |
CSS 3 (Background) | Yes | 1.0 | - |
border-bottom |
CSS 3 (Background) | Yes | 1.0 | - |
border-bottom-color |
CSS 3 (Background) | Yes | 1.0 | - |
border-bottom-left-radius |
CSS 3 (Background) | Yes | 2.0 | -moz-border-radius-bottomleft is supported since Gecko 1.0. |
border-bottom-right-radius |
CSS 3 (Background) | Yes | 2.0 | -moz-border-radius-bottomright is supported since Gecko 1.0. |
border-bottom-style |
CSS 3 (Background) | Yes | 1.0 | - |
border-bottom-width |
CSS 3 (Background) | Yes | 1.0 | - |
border-collapse |
CSS 2.1 | Yes | 1.0 | - |
border-color |
CSS 3 (Background) | Yes | 1.0 | - |
border-image |
CSS 3 (Background) | Yes | 15.0 | -moz-border-image is supported since Gecko 1.9.1, but differs from current specification. See bug 497995. |
border-image-outset |
CSS 3 (Background) | Yes | 15.0 | - |
border-image-repeat |
CSS 3 (Background) | Yes | (15.0) | The space value is not supported. |
border-image-slice |
CSS 3 (Background) | Yes | 15.0 | - |
border-image-source |
CSS 3 (Background) | Yes | 15.0 | - |
border-image-width |
CSS 3 (Background) | Yes | 13.0 | - |
border-left |
CSS 3 (Background) | Yes | 1.0 | - |
border-left-color |
CSS 3 (Background) | Yes | 1.0 | - |
border-left-style |
CSS 3 (Background) | Yes | 1.0 | - |
border-left-width |
CSS 3 (Background) | Yes | 1.0 | - |
border-radius |
CSS 3 (Background) | Yes | 2.0 | -moz-border-radius is supported since Gecko 1.0. |
border-right |
CSS 3 (Background) | Yes | 1.0 | - |
border-right-color |
CSS 3 (Background) | Yes | 1.0 | - |
border-right-style |
CSS 3 (Background) | Yes | 1.0 | - |
border-right-width |
CSS 3 (Background) | Yes | 1.0 | - |
border-spacing |
CSS 2.1 | Yes | 1.0 | - |
border-style |
CSS 3 (Background) | Yes | 1.0 | - |
border-top |
CSS 3 (Background) | Yes | 1.0 | - |
border-top-color |
CSS 3 (Background) | Yes | 1.0 | - |
border-top-left-radius |
CSS 3 (Background) | Yes | 2.0 | -moz-border-radius-topleft is supported since Gecko 1.0. |
border-top-right-radius |
CSS 3 (Background) | Yes | 2.0 | -moz-border-radius-topright is supported since Gecko 1.0. |
border-top-style |
CSS 3 (Background) | Yes | 1.0 | - |
border-top-width |
CSS 3 (Background) | Yes | 1.0 | - |
border-width |
CSS 3 (Background) | Yes | 1.0 | - |
bottom |
CSS 2.1 | Yes | 1.0 | - |
box-align |
CSS 3 (Flexbox) | No | - | -moz-box-align is supported since Gecko 1.0. |
box-decoration-break |
CSS 3 (Background) | No | - | - |
box-direction |
CSS 3 (Flexbox) | No | - | -moz-box-direction is supported since Gecko 1.0. |
box-flex |
CSS 3 (Flexbox) | No | - | -moz-box-flex is supported since Gecko 1.0. |
box-flex-group |
CSS 3 (Flexbox) | No | - | -moz-box-flex-group is supported since Gecko 1.0. |
box-lines |
CSS 3 (Flexbox) | No | - | - |
box-ordinal-group |
CSS 3 (Flexbox) | No | - | -moz-box-ordinal-group is supported since Gecko 1.0. |
box-orient |
CSS 3 (Flexbox) | No | - | -moz-box-orient is supported since Gecko 1.0. |
box-pack |
CSS 3 (Flexbox) | No | - | -moz-box-pack is supported since Gecko 1.0. |
box-shadow |
CSS 3 (Background) | Yes | 2.0 | -moz-box-shadow is supported since Gecko 1.9.1. |
box-sizing |
CSS 3 (UI) | No | - | -moz-box-sizing is supported since Gecko 1.0. |
caption-side |
CSS 2.1 | Yes | 1.4 | - |
clear |
CSS 2.1 | Yes | 1.0 | - |
clip |
CSS 2.1 | Yes | 1.0 | - |
color |
CSS 3 (Color) | Yes | 1.0 | - |
column-count |
CSS 3 (MultiCol) | No | - | -moz-column-count is supported since Gecko 1.8. |
column-fill |
CSS 3 (MultiCol) | No | - | -moz-column-fill is supported since Gecko 13.0. |
column-gap |
CSS 3 (MultiCol) | No | - | -moz-column-gap is supported since Gecko 1.8. |
column-rule |
CSS 3 (MultiCol) | No | - | -moz-column-rule is supported since Gecko 1.9.1. |
column-rule-color |
CSS 3 (MultiCol) | No | - | -moz-column-rule-color is supported since Gecko 1.9.1. |
column-rule-style |
CSS 3 (MutliCol) | No | - | -moz-column-rule-style is supported since Gecko 1.9.1. |
column-rule-width |
CSS 3 (MultiCol) | No | - | -moz-column-rule-width is supported since Gecko 1.9.1. |
column-span |
CSS 3 (MultiCol) | No | - | See bug 616436. |
column-width |
CSS 3 (MultiCol) | No | - | -moz-column-width is supported since Gecko 1.8. |
columns |
CSS 3 (MultiCol) | No | - | -moz-columns is supported since Gecko 9.0. |
content |
CSS 2.1 | Yes | 1.0 | - |
counter-increment |
CSS 2.1 | Yes | 1.8 | - |
counter-reset |
CSS 2.1 | Yes | 1.8 | - |
cursor |
CSS 2.1 | Yes | 1.0 | - |
direction |
CSS 2.1 | Yes | 1.0 | - |
display |
CSS 2.1 | Yes | 1.0 | - |
empty-cells |
CSS 2.1 | Yes | 1.0 | - |
float |
CSS 2.1 | Yes | 1.0 | - |
font |
CSS 2.1 | Yes | 1.0 | - |
font-family |
CSS 2.1 | Yes | 1.0 | - |
font-size |
CSS 2.1 | Yes | 1.0 | - |
font-size-adjust |
CSS 3 (Fonts) | Yes | 1.0 (1.9) | Prior to Gecko 1.9 this was supported only on windows. |
font-stretch |
CSS 3 (Fonts) | Yes | 9.0 | |
font-style |
CSS 2.1 | Yes | 1.0 | - |
font-variant |
CSS 2.1 | Yes | 1.0 | - |
font-weight |
CSS 2.1 | Yes | 1.0 | - |
height |
CSS 2.1 | Yes | 1.0 | - |
left |
CSS 2.1 | Yes | 1.0 | - |
letter-spacing |
CSS 2.1 | Yes | 1.0 | - |
line-height |
CSS 2.1 | Yes | 1.0 | - |
list-style |
CSS 2.1 | Yes | 1.0 | - |
list-style-image |
CSS 2.1 | Yes | 1.0 | - |
list-style-position |
CSS 2.1 | Yes | 1.0 | - |
list-style-type |
CSS 2.1 | Yes | 1.0 | - |
margin |
CSS 2.1 | Yes | 1.0 | - |
margin-bottom |
CSS 2.1 | Yes | 1.0 | - |
margin-left |
CSS 2.1 | Yes | 1.0 | - |
margin-right |
CSS 2.1 | Yes | 1.0 | - |
margin-top |
CSS 2.1 | Yes | 1.0 | - |
max-height |
CSS 2.1 | Yes | 1.7 | - |
max-width |
CSS 2.1 | Yes | 1.0 | - |
min-height |
CSS 2.1 | Yes | 1.7 | - |
object-fit |
CSS 3 (Images) | Yes | 36.0 | - |
object-position |
CSS 3 (Images) | Yes | 36.0 | - |
opacity |
CSS 3 (Color) | Yes | 1.7 | - |
orphans |
CSS 2.1 | No | - | See bug 137367. |
outline |
CSS 2.1 | Yes | 1.8 | - |
outline-color |
CSS 2.1 | Yes | 1.8 | - |
outline-offset |
CSS 3 (UI) | Yes | 1.8 | - |
outline-style |
CSS 2.1 | Yes | 1.8 | - |
outline-width |
CSS 2.1 | Yes | 1.8 | - |
overflow |
CSS 2.1 | Yes | 1.0 | - |
overflow-x |
CSS 3 (Box) | Yes | 1.8 | - |
overflow-y |
CSS 3 (Box) | Yes | 1.8 | - |
padding |
CSS 2.1 | Yes | 1.0 | - |
padding-bottom |
CSS 2.1 | Yes | 1.0 | - |
padding-left |
CSS 2.1 | Yes | 1.0 | - |
padding-right |
CSS 2.1 | Yes | 1.0 | - |
padding-top |
CSS 2.1 | Yes | 1.0 | - |
page-break-after |
CSS 2.1 | No | - | See bug 132035. |
page-break-before |
CSS 2.1 | No | - | |
page-break-inside |
CSS 2.1 | Yes | 19.0 | |
position |
CSS 2.1 | Yes | 1.0 | - |
quotes |
CSS 2.1 | Yes | 1.0 | - |
resize |
CSS 3 (UI) | Yes | 2.0 | - |
right |
CSS 2.1 | Yes | 1.0 | - |
table-layout |
CSS 2.1 | Yes | 1.0 | - |
text-align |
CSS 2.1 | Yes | 1.0 | - |
text-align-last |
CSS 3 (Text) | No | - | -moz-text-align-last is supported since Gecko 12.0. |
text-decoration |
CSS 2.1 | Yes | 1.0 | - |
text-decoration-color |
CSS 3 (Text) | No | - | -moz-text-decoration-color is supported since Gecko 6.0. |
text-decoration-line |
CSS 3 (Text) | No | - | -moz-text-decoration-line is supported since Gecko 6.0. |
text-decoration-skip |
CSS 3 (Text) | No | - | - |
text-decoration-style |
CSS 3 (Text) | No | - | -moz-text-decoration-style is supported since Gecko 6.0. |
text-indent |
CSS 2.1 | Yes | 1.0 | - |
text-shadow |
CSS 3 (Text) | Yes | 1.9.1 | - |
text-transform |
CSS 2.1 | Yes | 1.0 | - |
top |
CSS 2.1 | Yes | 1.0 | - |
transform (2D) |
CSS 3 (2D Transforms) | Yes | 16.0 | -moz-transform is supported since Gecko 1.9.1. |
transform-origin (2D) |
CSS 3 (2D Transforms) | Yes | 16.0 | -moz-transform-origin is supported since Gecko 1.9.1. |
transform (3D) |
CSS 3 (3D Transforms) | Yes | 16.0 | -moz-transform is supported since Gecko 10.0 |
transform-origin (3D) |
CSS 3 (3D Transforms) | Yes | 16.0 | -moz-transform-origin is supported since Gecko 10.0 |
transform-style |
CSS 3 (Transforms) | Yes | 16.0 | -moz-transform-style is supported since Gecko 10.0 |
transition |
CSS 3 (Transitions) | Yes | 16.0 | -moz-transition is supported since Gecko 2.0. |
transition-delay |
CSS 3 (Transitions) | Yes | 16.0 | -moz-transition-delay is supported since Gecko 2.0. |
transition-duration |
CSS 3 (Transitions) | Yes | 16.0 | -moz-transition-duration is supported since Gecko 2.0. |
transition-property |
CSS 3 (Transitions) | Yes | 16.0 | -moz-transition-property is supported since Gecko 2.0. |
transition-timing-function |
CSS 3 (Transitions) | Yes | 16.0 | -moz-transition-timing-function is supported since Gecko 2.0. |
unicode-bidi |
CSS 2.1 | Yes | 1.0 | - |
vertical-align |
CSS 2.1 | Yes | 1.0 | - |
visibility |
CSS 2.1 | Yes | 1.3 | - |
white-space |
CSS 2.1 | Yes | 1.0 | - |
widows |
CSS 2.1 | No | - | See bug 137367. |
width |
CSS 2.1 | Yes | 1.0 | - |
word-break |
CSS 3 (Text) | Yes | 15.0 | - |
word-spacing |
CSS 2.1 | Yes | 1.0 | - |
word-wrap |
CSS 3 (Text) | Yes | 1.9.1 | - |
z-index |
CSS 2.1 | Yes | 1.0 | - |
@-rules
| Rule | Specification | Supported | Supported since | Notes |
|---|---|---|---|---|
@charset |
CSS 2.1 | Yes | 1.0 | - |
@document |
CSS 3 | Yes | 6.0 | @-moz-document is supported since Gecko 1.8 |
@font-face |
CSS 3 (Fonts) | Yes | 1.9.1 | - |
@import |
CSS 2.1 | Yes | 1.0 | - |
@keyframes |
CSS 3 (Animations) | Yes | 16.0 | @-moz-keyframes is supported since Gecko 5.0 |
@media |
CSS 3 (Media Queries) | Yes | 1.0 | - |
@namespace |
CSS 3 (Namespace) | Yes | 1.0 | - |
@page |
CSS 2.1 | Yes | 19.0 | - |
@supports |
CSS 3 | Yes | 22.0 (18.0) | In Gecko 18.0 the @supports at-rule is only supported if the user enables it by setting the config value layout.css.supports-rule.enable to true. |
Media queries
| Property | Specification | Supported | Supported since | Notes |
|---|---|---|---|---|
aspect-ratio |
CSS 3 (MediaQueries) | Yes | 1.9.1 | - |
color |
CSS 3 (MediaQueries) | Yes | 1.9.1 | - |
color-index |
CSS 3 (MediaQueries) | Yes | 1.9.1 | - |
device-aspect-ratio |
CSS 3 (MediaQueries) | Yes | 1.9.1 | - |
device-height |
CSS 3 (MediaQueries) | Yes | 1.9.1 | - |
device-width |
CSS 3 (MediaQueries) | Yes | 1.9.1 | - |
grid |
CSS 3 (MediaQueries) | No | - | - |
height |
CSS 3 (MediaQueries) | Yes | 1.9.1 | - |
monochrome |
CSS 3 (MediaQueries) | Yes | 1.9.1 | - |
orientation |
CSS 3 (MediaQueries) | Yes | 1.9.1 | - |
resolution |
CSS 3 (MediaQueries) | Yes | 1.9.1 | - |
scan |
CSS 3 (MediaQueries) | No | - | - |
width |
CSS 3 (MediaQueries) | Yes | 1.9.1 | - |
Values and Units
| Value / Unit | Specification | Supported | Supported since | Notes |
|---|---|---|---|---|
| Keywords | ||||
inherit |
CSS 3 (Cascade) | Yes | 1.0 | - |
initial |
CSS 3 (Cascade) | No | - | -moz-initial is supported since Gecko 1.9. |
| Functions | ||||
attr() |
CSS 3 (Values) | No | 1.0 | Only supported for text in content properties. See bug 435426. |
calc() |
CSS 3 (Values) | Yes | 19.0 | -moz-calc is supported since Gecko 2.0 See bug 363249. |
counter() |
CSS 3 (Values) | Yes | 1.0 | - |
url() |
CSS 3 (Values) | Yes | 1.0 | - |
| Colors | ||||
| HTML4 color keywords | CSS 3 (Color) | Yes | 1.0 | - |
| SVG color keywords | CSS 3 (Color) | Yes | 1.0 | - |
| System colors | CSS 3 (Color) | Yes | 1.0 | - |
| RGB | CSS 3 (Color) | Yes | 1.0 | - |
rgba(r,g,b,a) |
CSS 3 (Color) | Yes | 1.9 | - |
hsl(h,s,l) |
CSS 3 (Color) | Yes | 1.5 | - |
hsla(h,s,l,a) |
CSS 3 (Color) | Yes | 1.9 | - |
currentColor |
CSS 3 (Color) | Yes | 1.8 | - |
transparent |
CSS 3 (Color) | Yes | 1.9 | - |
| Units | ||||
% |
CSS 3 (Values) | Yes | 1.0 | - |
ch |
CSS 3 (Values) | Yes | 1.9.1 | - |
cm |
CSS 3 (Values) | Yes | 1.0 | - |
deg |
CSS 3 (Values) | Yes | 1.9.1 | - |
dpcm |
CSS 3 (MediaQueries) | Yes | 1.9.1 | - |
dpi |
CSS 3 (MediaQueries) | Yes | 1.9.1 | - |
em |
CSS 3 (Values) | Yes | 1.0 | - |
ex |
CSS 3 (Values) | Yes | 1.0 | - |
gd |
CSS 3 (Values) | No | - | - |
grad |
CSS 3 (Values) | Yes | 1.9.1 | - |
Hz |
CSS 3 (Values) | No | - | - |
in |
CSS 3 (Values) | Yes | 1.0 | - |
kHz |
CSS 3 (Values) | No | - | - |
mm |
CSS 3 (Values) | Yes | 1.0 | - |
ms |
CSS 3 (Values) | Yes | 2.0 | - |
pc |
CSS 3 (Values) | Yes | 1.0 | - |
px |
CSS 3 (Values) | Yes | 1.0 | - |
pt |
CSS 3 (Values) | Yes | 1.0 | - |
rad |
CSS 3 (Values) | Yes | 1.9.1 | - |
rem |
CSS 3 (Values) | Yes | 1.9.2 | - |
s |
CSS 3 (Values) | Yes | 2.0 | - |
turn |
CSS 3 (Values) | No | - | - |
vh |
CSS 3 (Values) | Yes | 19.0 | - |
vm |
CSS 3 (Values) | Yes | 19.0 | |
vw |
CSS 3 (Values) | Yes | 19.0 | |
| Images and gradients | ||||
image() |
CSS 3 (Images) | No | - | - |
linear-gradient() |
CSS 3 (Images) | Yes | 16.0 | -moz-linear-gradient() is supported since Gecko 1.9.2. |
radial-gradient() |
CSS 3 (Images) | Yes | 16.0 | -moz-radial-gradient() is supported since Gecko 1.9.2. |
repeating-linear-gradient() |
CSS 3 (Images) | Yes | 16.0 | -moz-repeating-linear-gradient() is supported since Gecko 1.9.2. |
repeating-radial-gradient() |
CSS 3 (Images) | Yes | 16.0 | -moz-repeating-radial-gradient() is supported since Gecko 1.9.2. |
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