W3C CSS2 Cascading Style Sheets, level 2 - instructional media + ...

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, , , and may either have a value or ’auto’. Negative lengths are permitted. The value ’auto’ means that a given edge of the clipping region will be the same as the edge of the element’s generated box (i.e., ’auto’ means the same as ’0’.) When coordinates are rounded to pixel coordinates, care should be taken that no pixels remain visible when + is equal to the element’s width (or + equals the element’s height), and conversely that no pixels remain hidden when these values are 0. The element’s ancestors may also have clipping regions (in case their ’overflow’ property is not ’visible’); what is rendered is the intersection of the various clipping regions. If the clipping region exceeds the bounds of the UA’s document window, content may be clipped to that window by the native operating environment. Example(s): The following two rules: P { clip: rect(5px, 10px, 10px, 5px); } P { clip: rect(5px, -5px, 10px, 5px); } will create the rectangular clipping regions delimited by the dashed lines in the following illustrations: 148
(0, 0) (50, 0) clip region (0, 55) P’s block box (0, 0) (50, 0) clip region (0, 55) P’s block box Note. In <strong>CSS2</strong>, all clipping regions are rectangular. We anticipate future extensions to permit non-rectangular clipping. 11.2 Visibility: the ’visibility’ property ’visibility’ Value: visible | hidden | collapse | inherit Initial: inherit Applies to: all elements Inherited: no Percentages: N/A Media: visual The ’visibility’ property specifies whether the boxes generated by an element are rendered. Invisible boxes still affect layout (set the ’display’ property to ’none’ to suppress box generation altogether). Values have the following meanings: 149
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REC-CSS2-19980512 Cascading Style S
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Quick Table of Contents 1 About the
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4.3.4 URL + URN = URI . . . . . . .
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9.7 Relationships between ’displa
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cursive . . . . . . . . . . . . . 2
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B.1 New functionality . . . . . . .
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Section 2: An introduction to CSS2
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Initial This part specifies the pro
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The section on Paged Media was in l
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Contents 2 Introduction to CSS2 2.1
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CSS2 has more than 100 different pr
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Adding more rules to the style shee
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Simplicity. CSS2 is more complex th
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Document language The encoding lang
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3.2 Conformance This section define
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Contents 4 CSS2 syntax and basic da
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Macro Definition ident name nmstart
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In fact, these two methods may be c
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P[example="public class foo\ {\ pri
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A user agent conforming to a future
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0.28 mm 1.4 mm viewer 28 inch 71 cm
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Example(s): An example without quot
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Values outside the device gamut sho
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When a style sheet resides in a sep
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Contents 5 Selectors 5.1 Pattern ma
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5.2 Selector syntax A simple select
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5.6 Child selectors A child selecto
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Example(s): The following rule hide
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H1#chapter1 { text-align: center }
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Example(s): The following rule sets
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5.11.4 The language pseudo-class: :
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The following CSS2 will make a drop
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6 Assigning property values, Cascad
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BODY { font-size: 10pt } H1 { font-
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6.4.1 Cascading order To find the v
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author style sheet and may be overr
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Link to a target medium The bo
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Relationship between media groups a
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Top TM TB TP Margin (Transparent) B
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First element of list Second elemen
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Value: {1,4} | inherit Initial: not
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values, they apply to the top, righ
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’border-color’ Value: {1,4} | t
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Since the initial value of the bord
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Contents 9 Visual formatting model
Page 97 and 98: 9.2 Controlling box generation The
Page 99 and 100: The P generates a block box, with s
Page 101 and 102: The properties of the run-in elemen
Page 103 and 104: Value: static | relative | absolute
Page 105 and 106: The offset is a fixed distance from
Page 107 and 108: or like this: Several emphasized wo
Page 109 and 110: IMG { float: left } BODY, P, IMG {
Page 111 and 112: image margin paragraph border parag
Page 113 and 114: Values have the following meanings
Page 115 and 116: position: fixed; width: 100%; heigh
Page 117 and 118: Document Window (0,0) (0, 400) 1 Be
Page 119 and 120: Document Window (0,0) (0, 400) 24 p
Page 125 and 126: Document Window I used two red hyph
Page 127 and 128: This text will be beneath everythi
Page 129 and 130: (U+202C) at the end of the element.
Page 131 and 132: Contents 10 Visual formatting model
Page 133 and 134: #div1 { position: absolute; left: 5
Page 135 and 136: (If the border style is ’none’,
Page 137 and 138: ’max-width’ Value: Initial: App
Page 139 and 140: 10.6.1 Inline, non-replaced element
Page 141 and 142: Value: Initial: Applies to: | | n
Page 143 and 144: . We recommend a computed value for
Page 145 and 146: Contents 11 Visual effects 11.1 Ove
Page 147: DIV I didn’t like the play, but t
Page 151 and 152: onclick=’show("container2");hid
Page 153 and 154: 12 Generated content, automatic num
Page 155 and 156: the pseudo-element will behave as i
Page 157 and 158: ’block’: the pseudo-element is
Page 159 and 160: Approximate rendering ISO 10646 cod
Page 161 and 162: Value: [ ? ]+ | none | inherit Ini
Page 163 and 164: Example(s): The following style she
Page 165 and 166: first or last line box exists in a
Page 167 and 168: This is a very short document. This
Page 169 and 170: decimal Decimal numbers, beginning
Page 171 and 172: inside The marker box is the first
Page 173 and 174: OL.alpha { list-style: lower-alpha
Page 175 and 176: Contents 13 Paged media 13.1 Introd
Page 177 and 178: Sheet Page box A D Page content B C
Page 179 and 180: 13.2.3 Crop marks: the ’marks’
Page 181 and 182: 13.3.1 Break before/after elements:
Page 183 and 184: Value: | inherit Initial: 2 Applie
Page 185 and 186: 13.4 Cascading in the page context
Page 187 and 188: Contents 14 Colors and Backgrounds
Page 189 and 190: This property sets the background i
Page 191 and 192: User agents may treat ’fixed’ a
Page 193 and 194: 14.3 Gamma correction For informati
Page 195 and 196: Contents 15 Fonts 15.1 Introduction
Page 197 and 198: In the CSS2 font model, as in CSS1,
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15.2.2 Font family: the ’font-fam
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normal font. italic Specifies a fon
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1. ultra-condensed 2. extra-condens
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Specifies the aspect value. The num
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15.2.5 Shorthand font property: the
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menu The font used in menus (e.g.,
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Latin fonts Greek fonts Cyrillic fo
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page can be displayed. Progressive
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15.3.2 Descriptors for Selecting a
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15.3.3 Descriptors for Font Data Qu
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Value: [ [format( [, ]*)] | ] [,
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’stemv’ (Descriptor) Value: In
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the extras are ignored. [p. 42] Exa
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Swiss 721 light Swiss 721 Swiss 721
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The ideal solution would be to have
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15.4.11 Lower Baseline This gives t
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15.4.19 Vertical stem width This is
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The per-descriptor matching rules f
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The next example defines a family o
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Contents 16 Text 16.1 Indentation:
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16.3.1 Underlining, overlining, str
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Example(s): Consider this example:
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This property controls capitalizati
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Contents 17 Tables 17.1 Introductio
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other document languages (such as X
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’table-footer-group’) element T
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caption’s margin caption caption
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current margins text text text prev
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cells rows row groups columns colum
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The two algorithms are described be
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percentage values of ’height’ r
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The lengths specify the distance th
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order−width padding padding borde
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An example of a table with collapse
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Each document language may have dif
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270
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help Help is available for the obje
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18.3 User preferences for fonts As
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Example(s): For example, to draw a
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spatial audio), and paragraphs of c
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Value: | | inherit Initial: depen
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Example(s): The following two rules
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far-right Same as ’60deg’. With
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fast Same as 300 words per minute.
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Values have the following meanings:
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290
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SUB { vertical-align: sub } SUP { v
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Dynamic outlines [p. 274] . B.2 Upd
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the native font format on the Amiga
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TrueDoc TrueDoc technology was deve
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Square Cove (4) Obtuse Square Cove
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XHeight Standard/Serifed (4) High/T
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Block Add Block name Unicode range
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This table suggests where such info
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308
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pseudo_page : ’:’ IDENT ; font_
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{num}rad {num}grad {num}ms {num}s {
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[RFC1808] "Relative Uniform Resourc
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[RFC1630] "Universal Resource Ident
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Name ’border-top-width’ [p. 88]
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Name ’list-style-type’ [p. 168]
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Name ’speech-rate’ [p. 285] Val
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Name Values Initial value ’mathli
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’ascent’ (descriptor), 222 aspe
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close-quote, 159, 155 collapsing ma
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font family, 198 font set, 199 font
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definition of, 43 ’letter-spacing
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page model, 175 page selector, 176
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simple selector, 55 ’size’, 177
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valid style sheet, 29 value, 41 ver
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