CSS1 Values normal | pre | nowrap CSS2 Values inherit Initial normal Applies to Block-level elements.. Values normal | CSS2 Values inherit Initial normal Applies to All elements... CSS2
Trang 1Text Properties
vertical-align
Usage Affects the vertical positioning of the boxes generated by an inline-level element
Values baseline | sub | super | top | texttop | middle | bottom | text-bottom | sub | <percentage>
CSS2 Values inherit
Initial baseline
Applies to Inline-level and table-cell elements
Inherited No
white-space
Usage Specifies how white space inside the element is handled
CSS1 Values normal | pre | nowrap
CSS2 Values inherit
Initial normal
Applies to Block-level elements
Inherited Yes
word-spacing
Usage Specifies the spacing behavior between words
Values normal | <length>
CSS2 Values inherit
Initial normal
Applies to All elements
Inherited Yes
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Trang 2Visual Effects Properties
The following properties affect visual rendering of an element
clip
Usage Defines which portion of an element's rendered content is visible
CSS2 Values <shape> | auto | inherit
Initial auto
Applies to Block-level and replaced elements
Inherited No
overflow
Usage Specifies whether the contents of a block-level element are clipped when they overflow
the element's box
CSS2 Values visible | hidden | scroll | auto | inherit
Initial visible
Applies to Block-level and replaced elements
Inherited No
visibility
Usage Specifies whether the boxes generated by an element are rendered
CSS2 Values visible | hidden | collapse | inherit
Initial inherit
Applies to All elements
Inherited No
Trang 3Aural Style Sheet Properties
Aural Style Sheet Properties
Aural style sheets are provided for the blind and visually impaired communities Page contents are read
to the user The aural style sheet "canvas" uses dimensional space to render sounds in specified
sequences as page elements are displayed and selected
azimuth
Usage Enables you to position a sound Designed for spatial audio, which requires binaural
headphones or five-speaker home theater systems
CSS2 Values <angle> | [[left-side | far-left | left | center-left | center | center-right | right |
far-right | right-side] || behind ]| leftwards | rightwards | inherit
Initial center
Applies to All elements
Inherited Yes
cue
Usage Shorthand property for cue-before and cue-after Plays a sound before or after an
element is rendered
CSS2 Values cue-before | cue-after | inherit
Initial Not defined (shorthand property)
Applies to All elements
Inherited No
Usage Plays a sound after (cue-after) or before (cue-before) an element is rendered
CSS2 Values <uri> | none | inherit Initial none
Applies to All elements
Inherited No
elevation
Usage Enables you to position the angle of a sound For use with spatial audio (binaural
headphones or five-speaker home theater setups required)
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Trang 4CSS2 Values <angle> | below | level | above | higher | lower | inherit
Initial level
Applies to All elements
Inherited Yes
pause
Usage A shorthand property for setting pause-before and pause-after in the same location in
the style sheet
CSS2 Values <time> | <percentage> | inherit Initial Depends on browser
Applies to All elements
Inherited No
Usage Specifies a pause to be observed before or after speaking an element's content
CSS2 Values <time> | <percentage> | inherit
Initial Depends on browser
Applies to All elements
Inherited No
pitch
Usage Specifies the average pitch (frequency) of the speaking voice
CSS2 Values <frequency> | x-low | low | medium | high | x-high | inherit
Initial medium
Applies to All elements
Inherited Yes
Notes Average pitch for the standard male voice is around 120Hz; for the female voice, it is
around 210Hz
pitch-range
Usage Specifies variation in average pitch Used to vary inflection and add animation to the
voice
Trang 5Aural Style Sheet Properties
CSS2 Values <number> | inherit
Initial 50
Applies to All elements
Inherited Yes
play-during
Usage Specifies a sound to be played as a background while an element's content is spoken CSS2 Values <uri> | mix? | repeat? | auto | none | inherit
Initial auto
Applies to All elements
Inherited No
richness
Usage Specifies the richness, or brightness, of the speaking voice
CSS2 Values <number> | inherit
Initial 50
Applies to All elements
Inherited Yes
speak
Usage Specifies whether text will be rendered aurally, and in what manner
CSS2 Values normal | none | spell-out | inherit
Initial normal
Applies to All elements
Inherited Yes
speak-header
Usage Specifies whether table headers are spoken before every cell, or only before a cell when
it is associated with a different header than a previous cell
CSS2 Values once | always | inherit
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Trang 6Initial once
Applies to Elements that have header information
Inherited Yes
speak-numeral
Usage Speaks numbers as individual digits (100 is spoken as "one zero zero") or as a
continuous full number (100 is spoken as "one hundred")
CSS2 Values digits | continuous | inherit
Initial continuous
Applies to All elements
Inherited Yes
speak-punctuation
Usage Speaks punctuation literally (period, comma, and so on) or naturally as various pauses CSS2 Values code | none | inherit Initial none
Applies to All elements
Inherited Yes
speech-rate
Usage Specifies the speaking rate of the voice
CSS2 Values <number> | x-slow | slow | medium | fast | x-fast | faster | slower | inherit
Initial medium
Applies to All elements
Inherited Yes
stress
Usage Specifies the height of local peaks in the intonation of a voice Controls the amount of
inflection within stress markers
CSS2 Values <number> | inherit
Initial 50
Trang 7Aural Style Sheet Properties
Applies to All elements
Inherited Yes
Notes A companion to the pitch-range property
voice-family
Usage Specifies a comma-separated list of voice family names
CSS2 Values <specific-voice> | <generic-voice> | inherit
Initial Depends on browser
Applies to All elements
Inherited Yes
volume
Usage Specifies the median volume of a waveform Ranges from 0 (minimum audible volume
level) to 100 (maximum comfortable level)
CSS2 Values <number> | <percentage> | silent | x-soft | soft | medium | loud | x-loud | inherit
Initial medium
Applies to All elements
Inherited Yes
Notes silent renders no sound at all x-soft = 0, soft = 25, medium = 50, loud = 75, and
x-loud = 100
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Trang 8Generated Content/Automatic Numbering Properties
CSS2 introduces properties and values that enable authors to render content automatically (for
example, numbered lists can be generated automatically) Authors specify style and location of
generated content with :before and :after pseudo-elements that indicate the page elements before and after which content is generated automatically
content
Usage Used with :before and :after pseudo-elements to generate content in a document
CSS2 Values <string> | <uri> | <counter> | attr(X) | open-quote | close-quote | no-open-quote |
no-close-quote | inherit
Initial empty string
Applies to :before and :after pseudo-elements
Inherited All
counter-increment
Usage Accepts one or more names of counters (identifiers), each one optionally followed by an
integer The integer indicates the amount of increment for every occurrence of the element
CSS2 Values <identifier> | <integer> | none | inherit
Initial none
Applies to All elements
Inherited No
counter-reset
Usage Contains a list of one or more names of counters The integer gives the value that the
counter is set to on each occurrence of the element
CSS2 Values <identifier> | <integer> | none | inherit
Initial none
Applies to All elements
Inherited No
marker-offset
Trang 9Generated Content/Automatic Numbering Properties
Usage Specifies the distance between the nearest border edges of a marker box and its
associated principal box
CSS2 Values <length> | auto | inherit
Initial auto
Applies to Elements with display property set to marker
Inherited No
quotes
Usage Specifies quotation marks for embedded quotations
CSS2 Values <string> | <string>+ | none | inherit
Initial Depends on browser
Applies to All elements
Inherited Yes
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Trang 10Paged Media Properties
Normally, a web page appears as a continuous page CSS2 introduces the concept of paged media,
which is designed to split a document into one or more discrete pages for display on paper,
transparencies, computer screens, and so on Page size, margins, page breaks, widows, and orphans can all be set with the following properties and values Unfortunately, these properties aren't supported
by any current browsers
marks
Usage Specifies whether cross marks, crop marks, or both should be rendered just outside the
page box Used in high-quality printing
CSS2 Values crop | cross | none | inherit
Initial none
Applies to Page context
Inherited N/A
orphans
Usage Specifies the minimum number of lines of a paragraph that must be left at the bottom
of a page
CSS2 Values <integer> | inherit
Initial 2
Applies to Block-level elements
Inherited Yes
page
Usage Used to specify a particular type of page where an element should be displayed
CSS2 Values <identifier> :left | :right | auto
Initial auto
Applies to Block-level elements
Inherited Yes
Notes By adding :left or :right, the element can be forced to fall on a left or right page