HTML The Definitive Guide (155 page)
Read HTML The Definitive Guide Online
Authors: Chuck Musciano Bill Kennedy
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B.1 HTML 4.0 Core
C. Cascading Style Sheet
Attributes
Properties Quick Reference
Appendix C
C. Cascading Style Sheet Properties
Quick Reference
In the following table, we list in alphabetical order all the properties defined in the World Wide Web Consortium's Recommended Specification for Cascading Style Sheets, Level 1
(
http://www.w3.org/pub/WWW/TR/REC-CSS1
).
NOTE:
Graphic We know that browser support of style sheets will change faster than we can reprint this book, so we have created a separate "compliance document" that you can use to determine how style sheets are implemented by the latest releases of the
browsers. You can find this document at http://www.oreilly.com/catalog/html3/
.
Whenever that document and this appendix differ, the document should be considered more accurate. In this printing, we cover Netscape Navigator 4.05 and Internet Explorer 4.0. Graphic
As in other sections of this book, we use the Netscape and Internet Explorer icons to the far right of each property to show which browser supports that property. Properties with no icons are not currently supported by any browser.
We also include the number of the section in this book that fully defines the property.
We include each property's possible values, defined as either an explicit keyword (shown in constant width) or as one of these values: color
Either a color name or hexadecimal RGB value, as defined in Appendix F, Color Names and
Values
, or an RGB triple of the form: rgb(red, green, blue)
where
red
,
green
, and
blue
are either numbers in the range 0 to 255 or percentage values indicating the brightness of that color component. Values of 255 or 100% indicate that the corresponding color component is at its brightest; values of 0 or 0% indicate that the corresponding color component is turned completely off. For example: rgb(27, 119, 207)
rgb(50%, 75%, 0%)
are both valid color specifications.
length
An optional sign (either + or -) immediately followed by a number (with or without a decimal point) immediately followed by a two-character unit identifier. For values of zero, the unit identifier may be omitted.
The unit identifiers em and ex refer to the overall height of the font and to the height of the letter "x", respectively. The unit identifier px is equal to a single pixel on the display device.
The unit identifiers in, cm, mm, pt, and pc refer to inches, centimeters, millimeters, points, and picas, respectively. There are 72.27 points per inch, and 12 points in a pica.
number
An optional sign, immediately followed by a number (with or without a decimal point).
percent
An optional sign, immediately followed by a number (with or without a decimal point), immediately followed by a percent sign. The actual value is computed as a percentage of some other element property, usually the element's size.
url
The keyword url, immediately followed (no spaces) by a left parenthesis, followed by a URL
optionally enclosed in single or double quotes, followed by a matching right parenthesis. For example:
url("http://members.aol.com/htmlguru") is a valid URL value.
Finally, some values are lists of other values and are described as a "list of" some other value. In these cases, a list consists of one or more of the allowed values, separated by commas.
If there are several different values allowed for a property, these alternative choices are separated by vertical bars (|).
If the standard defines a default value for the property, that value is underlined.
background
Composite property for the
9.3.4.6
Graphic
background-attachment,
Graphic
background-color,
background-image,
background-position, and
background-repeat
properties; value is any of these
properties' values, in any order
background-attachment scroll | fixed Determines if the background 9.3.4.1
Graphic
image is fixed in the window or
scrolls as the document scrolls
background-color
color
|
Sets the background color of an
9.3.4.2
Graphic
transparent
element
Graphic
background-image
url
| none
Sets the background image of an
9.3.4.3
Graphic
element
Graphic
background-position
percent
|
length
|
Sets the initial position of the
9.3.4.4
Graphic
top | center |
element's background image, if
bottom | left |
specified; values are normally
right
paired to provide x, y positions.
Default position is 0% 0%
background-repeat
repeat |
Determines how the background
9.3.4.5
Graphic
repeat-x |
image is repeated (tiled) across
Graphic
repeaty |
an element
no-repeat
border
Sets all four borders on an
9.3.6.6
Graphic
element; value is one or more of
Graphic
a
color
, a value for
border-width, and a value
for border-style
border-bottom
Sets the bottom border on an
9.3.6.6
Graphic
element; value is one or more of
a
color
, a value for
border-bottom-width, and
a value for border-style
border-bottom-width
length
| thin |
Sets the thickness of an element's 9.3.6.4
Graphic
medium | thick
bottom border
Graphic
bordercolor
color
Sets the color of all four of an
9.3.6.3
Graphic
element's borders; default is the
color of the element
border-left
Sets the left border on an
9.3.6.6
Graphic
element; value is one or more of
a
color
, a value for
border-left-width, and a
value for border-style
border-left-width
length
| thin |
Sets the thickness of an element's 9.3.6.4
Graphic
medium | thick
left border
Graphic
border-right
Sets the right border on an
9.3.6.6
Graphic
element; value is one or more of
a
color
, a value for
border-right-width, and a
value for border-style
border-right-width
length
| thin |
Sets the thickness of an element's 9.3.6.4
Graphic
medium | thick
right border
Graphic
border-style
dashed |
Sets the style of all four of an
9.3.6.5
Graphic
dotted |
element's borders
Graphic
double |
groove | inset
| none | outset
| ridge | solid
border-top
Sets the top border on an
9.3.6.6
Graphic
element; value is one or more of
a
color
, a value for
border-top-width, and a
value for border-style
border-top-width
length
| thin |
Sets the thickness of an element's 9.3.6.4
Graphic
medium | thick
top border
Graphic
border-width
length
| thin |
Sets the thickness of all four of
9.3.6.4
Graphic
medium | thick
an element's borders
Graphic
clear
both | left |
Sets which margins of an
9.3.6.7
Graphic
none | right
element must not be adjacent to a
Graphic
floating element; the element
will be moved down until that
margin is clear
color
color
Sets the color of an element
9.3.4.7
Graphic
Graphic
display
block | inline
Controls how an element is
9.3.8.1
Graphic
| list-item |
displayed
none
float
left | none |
Determines if an element will
9.3.6.8
Graphic
right
float to the left or right, allowing
Graphic
text to wrap around it, or be
displayed inline (using none)
font
Sets all the font attributes for an
9.3.3.6
Graphic
element; value is any of the
Graphic
values for fontstyle
,
font-variant,
font-weight, fontsize,
line-height, and
font-family, in that order
font-family
list of font names
Define the font for an element,
