attr
Description
Syntax
CSS
attr()
Values
<attr()> =
attr(
<q-name>
<attr-type>? ,
<declaration-value>?
)<q-name>
The name of the attribute being referenced.
<attr-type> =
string |
url |
ident |
color |
number |
percentage |
length |
angle |
time |
frequency |
flex |
<dimension-unit>string
A string value.
url
A URL value.
ident
A custom identifier value.
color
A color value.
number
A number value.
percentage
A percentage value.
length
A length value.
angle
An angle value.
time
A time value.
frequency
A frequency value.
flex
A flex value.
<dimension-unit>
A literal "%" character or an ident whose value is any of the CSS units for <length>, <angle>, <time>, <frequency>, or <flex> values (such as px or ms).
<declaration-value>
Any sequence of one or more tokens, so long as the sequence does not contain <bad-string-token>, <bad-url-token>, unmatched <)-token>, <]-token>, or <}-token>, or top-level <semicolon-token> tokens or <delim-token> tokens with a value of "!". It represents the entirety of what a valid declaration can have as its value.
