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background

Description

The background property for CSS is shorthand for background-attachment, background-clip, background-color, background-image, background-position, and background-repeat.

Syntax

CSS

background: value;

JS

object.style.background = "value";

Values

<'background'> = <bg-layer># , <final-bg-layer>
<bg-layer> = <bg-image> || <bg-position> [ / <bg-size> ]? || <repeat-style> || <attachment> || <box> || <box>
<bg-image> = <image> | none
<image> = <url> | <gradient>
<url> = url( <string> <url-modifier>* )
<string>

Specifies a sequence of characters delimited by double quotes (") or single quotes (').

<url-modifier>

Changes the meaning or the interpretation of the URL.

<gradient> = <linear-gradient()> | <repeating-linear-gradient()> | <radial-gradient()> | <repeating-radial-gradient()>
<linear-gradient()> = linear-gradient( [ <angle> | to <side-or-corner> ]? , <color-stop-list> )
<angle>
deg

Degrees. There are 360 degrees in a full circle.

grad

Gradians, also known as "gons" or "grades". There are 400 gradians in a full circle.

rad

Radians. There are 2p radians in a full circle.

turn

Turns. There is 1 turn in a full circle.

<side-or-corner> = [left | right] || [top | bottom]
left

Left.

right

Right.

top

Top.

bottom

Bottom.

<color-stop-list> = <linear-color-stop> , [ <linear-color-hint>? , <linear-color-stop> ]#
<linear-color-stop> = <color> && <length-percentage>?
<color>

Specifies the color using a keyword or a numerical specification.

<length-percentage> =
    <length> |
    <percentage>
<length>

Specifies the length using a number followed by a unit of measurement.

<percentage>

Specifies the percentage using a number followed by a percent sign (%).

<linear-color-hint> = <length-percentage>
<length-percentage> =
    <length> |
    <percentage>
<length>

Specifies the length using a number followed by a unit of measurement.

<percentage>

Specifies the percentage using a number followed by a percent sign (%).

<repeating-linear-gradient()> = linear-gradient( [ <angle> | to <side-or-corner> ]? , <color-stop-list> )
<angle>
deg

Degrees. There are 360 degrees in a full circle.

grad

Gradians, also known as "gons" or "grades". There are 400 gradians in a full circle.

rad

Radians. There are 2p radians in a full circle.

turn

Turns. There is 1 turn in a full circle.

<side-or-corner> = [left | right] || [top | bottom]
left

Left.

right

Right.

top

Top.

bottom

Bottom.

<color-stop-list> = <linear-color-stop> , [ <linear-color-hint>? , <linear-color-stop> ]#
<linear-color-stop> = <color> && <length-percentage>?
<color>

Specifies the color using a keyword or a numerical specification.

<length-percentage> =
    <length> |
    <percentage>
<length>

Specifies the length using a number followed by a unit of measurement.

<percentage>

Specifies the percentage using a number followed by a percent sign (%).

<linear-color-hint> = <length-percentage>
<length-percentage> =
    <length> |
    <percentage>
<length>

Specifies the length using a number followed by a unit of measurement.

<percentage>

Specifies the percentage using a number followed by a percent sign (%).

<radial-gradient()> = radial-gradient( [ <ending-shape> || <size> ]? [ at <position> ]? , <color-stop-list> )
<ending-shape>

Determines whether the gradient's ending shape is a circle or an ellipse.

<size>

Determines the size of the gradient's ending shape.

<position> = [ [ left | center | right ] || [ top | center | bottom ] | [ left | center | right | <length-percentage> ] [ top | center | bottom | <length-percentage> ]? | [ [ left | right ] <length-percentage> ] && [ [ top | bottom ] <length-percentage> ] ]
left

Left.

center

Center.

right

Right.

top

Top.

bottom

Bottom.

<length-percentage> =
    <length> |
    <percentage>
<length>

Specifies the length using a number followed by a unit of measurement.

<percentage>

Specifies the percentage using a number followed by a percent sign (%).

<color-stop-list> = <linear-color-stop> , [ <linear-color-hint>? , <linear-color-stop> ]#
<linear-color-stop> = <color> && <length-percentage>?
<color>

Specifies the color using a keyword or a numerical specification.

<length-percentage> =
    <length> |
    <percentage>
<length>

Specifies the length using a number followed by a unit of measurement.

<percentage>

Specifies the percentage using a number followed by a percent sign (%).

<linear-color-hint> = <length-percentage>
<length-percentage> =
    <length> |
    <percentage>
<length>

Specifies the length using a number followed by a unit of measurement.

<percentage>

Specifies the percentage using a number followed by a percent sign (%).

<repeating-radial-gradient()> = radial-gradient( [ <ending-shape> || <size> ]? [ at <position> ]? , <color-stop-list> )
<ending-shape>

Determines whether the gradient's ending shape is a circle or an ellipse.

<size>

Determines the size of the gradient's ending shape.

<position> = [ [ left | center | right ] || [ top | center | bottom ] | [ left | center | right | <length-percentage> ] [ top | center | bottom | <length-percentage> ]? | [ [ left | right ] <length-percentage> ] && [ [ top | bottom ] <length-percentage> ] ]
left

Left.

center

Center.

right

Right.

top

Top.

bottom

Bottom.

<length-percentage> =
    <length> |
    <percentage>
<length>

Specifies the length using a number followed by a unit of measurement.

<percentage>

Specifies the percentage using a number followed by a percent sign (%).

<color-stop-list> = <linear-color-stop> , [ <linear-color-hint>? , <linear-color-stop> ]#
<linear-color-stop> = <color> && <length-percentage>?
<color>

Specifies the color using a keyword or a numerical specification.

<length-percentage> =
    <length> |
    <percentage>
<length>

Specifies the length using a number followed by a unit of measurement.

<percentage>

Specifies the percentage using a number followed by a percent sign (%).

<linear-color-hint> = <length-percentage>
<length-percentage> =
    <length> |
    <percentage>
<length>

Specifies the length using a number followed by a unit of measurement.

<percentage>

Specifies the percentage using a number followed by a percent sign (%).

none

An image layer but draws nothing.

<bg-position> = [ left | center | right | top | bottom | <length-percentage> ] | [ left | center | right | <length-percentage> ] [ top | center | bottom | <length-percentage> ] | [ center | [ left | right ] <length-percentage>? ] && [ center | [ top | bottom ] <length-percentage>? ]
left

Computes to 0% for the horizontal position if one or two values are given. Otherwise, specifies the left edge as the origin for the next offset.

center

Computes to 50% for the horizontal position if the horizontal position is not specified. Otherwise, specifies 50% for the vertical position.

right

Computes to 100% for the horizontal position if one or two values are given. Otherwise, specifies the right edge as the origin for the next offset.

top

Computes to 0% for the vertical position if one or two values are given. Otherwise, specifies the top edge as the origin for the next offset.

bottom

Computes to 100% for the vertical position if one or two values are given. Otherwise, specifies the bottom edge as the origin for the next offset.

<length-percentage> =
    <length> |
    <percentage>
<length>

Specifies the length using a number followed by a unit of measurement.

<percentage>

Specifies the percentage using a number followed by a percent sign (%).

<bg-size> = [ <length-percentage [0,∞]> | auto ]{1,2} | cover | contain
<length-percentage> =
    <length> |
    <percentage>
<length>

Specifies the length using a number followed by a unit of measurement.

<percentage>

Specifies the percentage using a number followed by a percent sign (%).

auto

Automatically specified by the user agent.

cover

Scale the image, while preserving its intrinsic aspect ratio (if any), to the smallest size such that both its width and its height can completely cover the background positioning area.

contain

Scale the image, while preserving its intrinsic aspect ratio (if any), to the largest size such that both its width and its height can fit inside the background positioning area.

<repeat-style> = repeat-x | repeat-y | [repeat | space | round | no-repeat]{1,2}
repeat-x

The image is repeated in the horizontal direction as often as needed to cover the background painting area.

repeat-y

The image is repeated in the vertical direction as often as needed to cover the background painting area.

repeat

The image is repeated in the horizontal and vertical direction as often as needed to cover the background painting area.

space

The image is repeated as often as will fit within the background positioning area without being clipped and then the images are spaced out to fill the area.

round

The image is repeated as often as will fit within the background positioning area. If it doesn't fit a whole number of times, it is rescaled so that it does.

no-repeat

The image is placed once and not repeated in this direction.

<attachment> = scroll | fixed | local
scroll

The background is fixed with regard to the element itself.

fixed

The background is fixed with regard to the viewport.

local

The background is fixed with regard to the element's contents.

<box> = border-box | padding-box | content-box
border-box

Area within the border box.

padding-box

Area within the padding box.

content-box

Area within the content box.

<final-bg-layer> = <'background-color'> || <bg-image> || <bg-position> [ / <bg-size> ]? || <repeat-style> || <attachment> || <box> || <box>
<'background-color'> = <color>
<color>

Specifies the color using a keyword or a numerical specification.

<bg-image> = <image> | none
<image> = <url> | <gradient>
<url> = url( <string> <url-modifier>* )
<string>

Specifies a sequence of characters delimited by double quotes (") or single quotes (').

<url-modifier>

Changes the meaning or the interpretation of the URL.

<gradient> = <linear-gradient()> | <repeating-linear-gradient()> | <radial-gradient()> | <repeating-radial-gradient()>
<linear-gradient()> = linear-gradient( [ <angle> | to <side-or-corner> ]? , <color-stop-list> )
<angle>
deg

Degrees. There are 360 degrees in a full circle.

grad

Gradians, also known as "gons" or "grades". There are 400 gradians in a full circle.

rad

Radians. There are 2p radians in a full circle.

turn

Turns. There is 1 turn in a full circle.

<side-or-corner> = [left | right] || [top | bottom]
left

Left.

right

Right.

top

Top.

bottom

Bottom.

<color-stop-list> = <linear-color-stop> , [ <linear-color-hint>? , <linear-color-stop> ]#
<linear-color-stop> = <color> && <length-percentage>?
<color>

Specifies the color using a keyword or a numerical specification.

<length-percentage> =
    <length> |
    <percentage>
<length>

Specifies the length using a number followed by a unit of measurement.

<percentage>

Specifies the percentage using a number followed by a percent sign (%).

<linear-color-hint> = <length-percentage>
<length-percentage> =
    <length> |
    <percentage>
<length>

Specifies the length using a number followed by a unit of measurement.

<percentage>

Specifies the percentage using a number followed by a percent sign (%).

<repeating-linear-gradient()> = linear-gradient( [ <angle> | to <side-or-corner> ]? , <color-stop-list> )
<angle>
deg

Degrees. There are 360 degrees in a full circle.

grad

Gradians, also known as "gons" or "grades". There are 400 gradians in a full circle.

rad

Radians. There are 2p radians in a full circle.

turn

Turns. There is 1 turn in a full circle.

<side-or-corner> = [left | right] || [top | bottom]
left

Left.

right

Right.

top

Top.

bottom

Bottom.

<color-stop-list> = <linear-color-stop> , [ <linear-color-hint>? , <linear-color-stop> ]#
<linear-color-stop> = <color> && <length-percentage>?
<color>

Specifies the color using a keyword or a numerical specification.

<length-percentage> =
    <length> |
    <percentage>
<length>

Specifies the length using a number followed by a unit of measurement.

<percentage>

Specifies the percentage using a number followed by a percent sign (%).

<linear-color-hint> = <length-percentage>
<length-percentage> =
    <length> |
    <percentage>
<length>

Specifies the length using a number followed by a unit of measurement.

<percentage>

Specifies the percentage using a number followed by a percent sign (%).

<radial-gradient()> = radial-gradient( [ <ending-shape> || <size> ]? [ at <position> ]? , <color-stop-list> )
<ending-shape>

Determines whether the gradient's ending shape is a circle or an ellipse.

<size>

Determines the size of the gradient's ending shape.

<position> = [ [ left | center | right ] || [ top | center | bottom ] | [ left | center | right | <length-percentage> ] [ top | center | bottom | <length-percentage> ]? | [ [ left | right ] <length-percentage> ] && [ [ top | bottom ] <length-percentage> ] ]
left

Left.

center

Center.

right

Right.

top

Top.

bottom

Bottom.

<length-percentage> =
    <length> |
    <percentage>
<length>

Specifies the length using a number followed by a unit of measurement.

<percentage>

Specifies the percentage using a number followed by a percent sign (%).

<color-stop-list> = <linear-color-stop> , [ <linear-color-hint>? , <linear-color-stop> ]#
<linear-color-stop> = <color> && <length-percentage>?
<color>

Specifies the color using a keyword or a numerical specification.

<length-percentage> =
    <length> |
    <percentage>
<length>

Specifies the length using a number followed by a unit of measurement.

<percentage>

Specifies the percentage using a number followed by a percent sign (%).

<linear-color-hint> = <length-percentage>
<length-percentage> =
    <length> |
    <percentage>
<length>

Specifies the length using a number followed by a unit of measurement.

<percentage>

Specifies the percentage using a number followed by a percent sign (%).

<repeating-radial-gradient()> = radial-gradient( [ <ending-shape> || <size> ]? [ at <position> ]? , <color-stop-list> )
<ending-shape>

Determines whether the gradient's ending shape is a circle or an ellipse.

<size>

Determines the size of the gradient's ending shape.

<position> = [ [ left | center | right ] || [ top | center | bottom ] | [ left | center | right | <length-percentage> ] [ top | center | bottom | <length-percentage> ]? | [ [ left | right ] <length-percentage> ] && [ [ top | bottom ] <length-percentage> ] ]
left

Left.

center

Center.

right

Right.

top

Top.

bottom

Bottom.

<length-percentage> =
    <length> |
    <percentage>
<length>

Specifies the length using a number followed by a unit of measurement.

<percentage>

Specifies the percentage using a number followed by a percent sign (%).

<color-stop-list> = <linear-color-stop> , [ <linear-color-hint>? , <linear-color-stop> ]#
<linear-color-stop> = <color> && <length-percentage>?
<color>

Specifies the color using a keyword or a numerical specification.

<length-percentage> =
    <length> |
    <percentage>
<length>

Specifies the length using a number followed by a unit of measurement.

<percentage>

Specifies the percentage using a number followed by a percent sign (%).

<linear-color-hint> = <length-percentage>
<length-percentage> =
    <length> |
    <percentage>
<length>

Specifies the length using a number followed by a unit of measurement.

<percentage>

Specifies the percentage using a number followed by a percent sign (%).

none

An image layer but draws nothing.

<bg-position> = [ left | center | right | top | bottom | <length-percentage> ] | [ left | center | right | <length-percentage> ] [ top | center | bottom | <length-percentage> ] | [ center | [ left | right ] <length-percentage>? ] && [ center | [ top | bottom ] <length-percentage>? ]
left

Computes to 0% for the horizontal position if one or two values are given. Otherwise, specifies the left edge as the origin for the next offset.

center

Computes to 50% for the horizontal position if the horizontal position is not specified. Otherwise, specifies 50% for the vertical position.

right

Computes to 100% for the horizontal position if one or two values are given. Otherwise, specifies the right edge as the origin for the next offset.

top

Computes to 0% for the vertical position if one or two values are given. Otherwise, specifies the top edge as the origin for the next offset.

bottom

Computes to 100% for the vertical position if one or two values are given. Otherwise, specifies the bottom edge as the origin for the next offset.

<length-percentage> =
    <length> |
    <percentage>
<length>

Specifies the length using a number followed by a unit of measurement.

<percentage>

Specifies the percentage using a number followed by a percent sign (%).

<bg-size> = [ <length-percentage [0,∞]> | auto ]{1,2} | cover | contain
<length-percentage> =
    <length> |
    <percentage>
<length>

Specifies the length using a number followed by a unit of measurement.

<percentage>

Specifies the percentage using a number followed by a percent sign (%).

auto

Automatically specified by the user agent.

cover

Scale the image, while preserving its intrinsic aspect ratio (if any), to the smallest size such that both its width and its height can completely cover the background positioning area.

contain

Scale the image, while preserving its intrinsic aspect ratio (if any), to the largest size such that both its width and its height can fit inside the background positioning area.

<repeat-style> = repeat-x | repeat-y | [repeat | space | round | no-repeat]{1,2}
repeat-x

The image is repeated in the horizontal direction as often as needed to cover the background painting area.

repeat-y

The image is repeated in the vertical direction as often as needed to cover the background painting area.

repeat

The image is repeated in the horizontal and vertical direction as often as needed to cover the background painting area.

space

The image is repeated as often as will fit within the background positioning area without being clipped and then the images are spaced out to fill the area.

round

The image is repeated as often as will fit within the background positioning area. If it doesn't fit a whole number of times, it is rescaled so that it does.

no-repeat

The image is placed once and not repeated in this direction.

<attachment> = scroll | fixed | local
scroll

The background is fixed with regard to the element itself.

fixed

The background is fixed with regard to the viewport.

local

The background is fixed with regard to the element's contents.

<box> = border-box | padding-box | content-box
border-box

Area within the border box.

padding-box

Area within the padding box.

content-box

Area within the content box.

Examples

1 · background-attachment · fixed

2 · background-attachment · local

3 · background-attachment · scroll

4 · background-attachment · JS

5 · background-clip · border-box

6 · background-clip · padding-box

7 · background-clip · content-box

8 · background-clip · JS

9 · background-color

10 · background-color · JS

11 · background-image · image · url

12 · background-image · image · gradient · linear-gradient

13 · background-image · image · gradient · radial-gradient

14 · background-image · none

15 · background-image · JS

16 · background-position · bottom

17 · background-position · center

18 · background-position · left

19 · background-position · length

20 · background-position · percentage

21 · background-position · right

22 · background-position · top

23 · background-position · JS

24 · background-repeat · no-repeat

25 · background-repeat · repeat

26 · background-repeat · repeat-x

27 · background-repeat · repeat-y

28 · background-repeat · round

29 · background-repeat · space

30 · background-repeat · JS

background-attachment

background-clip

background-color

background-image

background-position

background-position-x

background-position-y

background-repeat

accent-color

align-content

align-items

align-self

all

animation

animation-composition

animation-delay

animation-direction

animation-duration

animation-fill-mode

animation-iteration-count

animation-name

animation-play-state

animation-timeline

animation-timing-function

appearance

aspect-ratio

backdrop-filter

backface-visibility

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

block-ellipsis

block-size

border

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-bottom

border-bottom-color

border-bottom-left-radius

border-bottom-right-radius

border-bottom-style

border-bottom-width

border-collapse

border-color

border-end-end-radius

border-end-start-radius

border-image

border-image-outset

border-image-repeat

border-image-slice

border-image-source

border-image-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

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-start-end-radius

border-start-start-radius

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

caption-side

caret

caret-color

caret-shape

clear

clip

clip-path

color

color-scheme

column-count

column-fill

column-gap

column-rule

column-rule-color

column-rule-style

column-rule-width

column-span

column-width

columns

contain

contain-intrinsic-block-size

contain-intrinsic-height

contain-intrinsic-inline-size

contain-intrinsic-size

contain-intrinsic-width

container

container-name

container-type

content

content-visibility

continue

counter-increment

counter-reset

counter-set

cursor

direction

display

empty-cells

filter

flex

flex-basis

flex-direction

flex-flow

flex-grow

flex-shrink

flex-wrap

float

font

font-family

font-feature-settings

font-kerning

font-optical-sizing

font-size

font-size-adjust

font-stretch

font-style

font-variant

font-variant-caps

font-variant-ligatures

font-variant-numeric

font-variant-position

font-variation-settings

font-weight

forced-color-adjust

gap

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

hanging-punctuation

height

hyphens

image-rendering

initial-letter

initial-letter-align

inline-size

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-clamp

line-height

list-style

list-style-image

list-style-position

list-style-type

margin

margin-block

margin-block-end

margin-block-start

margin-bottom

margin-inline

margin-inline-end

margin-inline-start

margin-left

margin-right

margin-top

mask

mask-border

mask-border-mode

mask-border-outset

mask-border-repeat

mask-border-slice

mask-border-source

mask-border-width

mask-clip

mask-composite

mask-image

mask-mode

mask-origin

mask-position

mask-repeat

mask-size

mask-type

math-depth

math-shift

math-style

max-block-size

max-height

max-inline-size

max-lines

max-width

min-block-size

min-height

min-inline-size

min-width

mix-blend-mode

nav-down

nav-left

nav-right

nav-up

object-fit

object-position

opacity

orphans

outline

outline-color

outline-offset

outline-style

outline-width

overflow

overflow-block

overflow-clip-margin

overflow-inline

overflow-wrap

overflow-x

overflow-y

padding

padding-block

padding-block-end

padding-block-start

padding-bottom

padding-inline

padding-inline-end

padding-inline-start

padding-left

padding-right

padding-top

paint-order

perspective

perspective-origin

place-content

place-items

place-self

pointer-events

position

print-color-adjust

quotes

resize

right

rotate

row-gap

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-stop

scroll-snap-type

scroll-timeline

scroll-timeline-axis

scroll-timeline-name

scrollbar-color

scrollbar-gutter

scrollbar-width

shape-image-threshold

shape-margin

shape-outside

tab-size

table-layout

text-align

text-align-all

text-align-last

text-combine-upright

text-decoration

text-decoration-color

text-decoration-line

text-decoration-skip-ink

text-decoration-style

text-decoration-thickness

text-decoration-trim

text-emphasis

text-emphasis-color

text-emphasis-position

text-emphasis-style

text-indent

text-justify

text-orientation

text-overflow

text-shadow

text-transform

text-underline-offset

text-underline-position

top

transform

transform-box

transform-origin

transform-style

transition

transition-delay

transition-duration

transition-property

transition-timing-function

translate

unicode-bidi

vertical-align

visibility

white-space

widows

width

word-break

word-spacing

word-wrap

writing-mode

z-index

zoom

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