css1?

CSS1提供有關字型、顏色、位置和文字屬性的基本資訊，該版本已經得到了目前解析HTML和XML的瀏覽器的廣泛支援。

讓程式設計師開發時可以不考慮顯示和介面就可以製作表單和介面，顯示問題可由美工或是程式設計師後期再來編寫相應的 CSS2.0樣式來解決。

list-style-type

disc circle square decimal decimal-leading-zero lower-roman upper-roman lower-greek lower-alpha lower-latin upper-alpha upper-latin _qdzhj.com_ hebrew armenian georgian cjk-ideographic hiragana katakana hiragana-iroha katakana-iroha none inherit

margin

{1,4} inherit

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CSS2

編輯

CSS2.0提供給我們了一個機制，讓程式設計師開發時可以不考慮顯示和介面就可以製作表單和介面，顯示問題可由美工或是程式設計師後期再來編寫相應的 CSS2.0樣式來解決。不過由於CSS2.0目前尚未見過很好的編輯軟體，所以無法做到所見即所得，編寫起來不易。

目錄

1CSS2簡介

2CSS2單位

相對長度單位

絕對長度單位

顏色單位

角度單位

時間單位

頻率單位

3CSS2標準屬性

1CSS2簡介編輯

樣式單自從CSS1的版本之後，又在1998年5月釋出了CSS2版本，樣式單得到了更多的充實。

CSS2.0是一套全新的樣式表結構，_qdzhj.com_是由W3C推行的，同以往的CSS1.0或CSS1.2完全不一樣，CSS2.0推薦的是一套內容和表現效果分離的方式，HTML元素可以通過CSS2.0的樣式控制顯示效果，可完全不使用以往HTML中的table和td來定位表單的外觀和樣式，只需使用div和 Li此類HTML標籤來分割元素，之後即可通過CSS2.0樣式來定義表單介面的外觀。

2CSS2單位編輯

相對長度單位

em ex px

絕對長度單位

pt pc in cm mm

顏色單位

rgb(R,G,B) #RRGGBB Color Name

角度單位

deg grad rad

時間單位

s ms

頻率單位

kHz Hz

3CSS2標準屬性編輯

屬性

取值

(本列及後列連結源為W3C）

初值

適用於

（預設所有）

繼承性

百分比

（預設N/A）

媒體

azimuth

[[ left-side far-left _yuzhishiye.com_ left center-left _qdzhj.com_center center-right right far-right right-side ] behind ] leftwards rightwards inherit

center

yes

aural

background

[background-color background-image _yuzhishiye.com_ background-repeat background-attachment background-position] inherit

XX

no

allowed on 'background-position'

visual

background-attachment

scroll fixed inherit

scroll

no

visual

background-color

transparent inherit

transparent

no

visual

background-image

none inherit

none

no

visual

background-position

[ [ ]{1,2} [ [top center bottom] [left center right] ] ] inherit

0% 0%

block-level and replaced elements

no

refer to the size of the box itself

visual

background-repeat

repeat repeat-x repeat-y no-repeat inherit

repeat

no

visual

border

[ border-width border-style ] inherit

see individual properties

no

visual

border-collapse

collapse separate inherit

collapse

'table' and 'inline-table' elements

yes

visual

border-color

{1,4} transparent inherit

see individual properties

no

visual

border-spacing

? inherit

0

'table' and 'inline-table' elements

yes

visual

border-style

{1,4} inherit

see individual properties

no

visual

border-top border-right border-bottom border-left

[ border-top-width border-style ] inherit

see individual properties

no

visual

border-top-color border-right-color border-bottom-color border-left-color

inherit

the value of the 'color' property

no

visual

border-top-style border-right-style border-bottom-style border-left-style

inherit

none

no

visual

border-top-width border-right-width border-bottom-width border-left-width

inherit

medium

no

visual

border-width

{1,4} inherit

see individual properties

no

visual

bottom

auto inherit

auto

positioned elements

no

refer to height of containing block

visual

caption-side

top bottom left right inherit

top

'table-caption' elements

yes

visual

clear

none left right both inherit

none

block-level elements

no

visual

clip

auto inherit

auto

block-level and replaced elements

no

visual

color

inherit

depends on user agent

yes

visual

content

[ attr(X) open-quote close-quote no-open-quote no-close-quote ]+ inherit

empty string

:before and :after pseudo-elements

no

all

counter-increment

[ ? ]+ none inherit

none

no

all

counter-reset

[ ? ]+ none inherit

none

no

all

cue

[ cue-before cue-after ] inherit

XX

no

aural

cue-after

none inherit

none

no

aural

cue-before

none inherit

none

no

aural

cursor

[ [ ,]* [ auto crosshair default pointer move e-resize ne-resize nw-resize n-resize se-resize sw-resize s-resize w-resize text wait help ] ] inherit

auto

yes

visual, interactive

direction

ltr rtl inherit

ltr

all elements, but see prose

yes

visual

display

inline block list-item run-in compact marker table inline-table table-row-group table-header-group table-footer-group table-row table-column-group table-column table-cell table-caption none inherit

inline

no

all

elevation

below level above higher lower inherit

level

yes

aural

empty-cells

show hide inherit

show

'table-cell' elements

yes

visual

float

left right none inherit

none

all but positioned elements and generated content

no

visual

font

[ [ font-style font-variant font-weight ]? font-size [ / line-height ]? font-family ] caption icon menu message-box small-caption status-bar inherit

see individual properties

yes

allowed on 'font-size' and 'line-height'

visual

font-family

[[ ],]* [ ] inherit

depends on user agent

yes

visual

font-size

inherit

medium

yes, the computed value is inherited

refer to parent element's font size

visual

font-size-adjust

none inherit

none

yes

visual

font-stretch

normal wider narrower ultra-condensed extra-condensed condensed semi-condensed semi-expanded expanded extra-expanded ultra-expanded inherit

normal

yes

visual

font-style

normal italic oblique inherit

normal

yes

visual

font-variant

normal small-caps inherit

normal

yes

visual

font-weight

normal bold bolder lighter 100 、 200 300、 400 、 500、 600 700 、 800 900 inherit

normal

yes

visual

height

auto inherit

auto

all elements but non-replaced inline elements, table columns, and column groups

no

see prose

visual

left

auto inherit

auto

positioned elements

no

refer to width of containing block

visual

letter-spacing

normal inherit

normal

yes

visual

line-height

normal inherit

normal

yes

refer to the font size of the element itself

visual

list-style

[ list-style-type list-style-position list-style-image ] inherit

XX

elements with 'display: list-item'

yes

visual

list-style-image

none inherit

none

elements with 'display: list-item'

yes

visual

list-style-position

inside outside inherit

outside

elements with 'display: list-item'

yes

visual

list-style-type

disc circle square decimal decimal-leading-zero lower-roman upper-roman lower-greek lower-alpha lower-latin upper-alpha upper-latin hebrew armenian georgian cjk-ideographic hiragana katakana hiragana-iroha katakana-iroha none inherit

disc

elements with 'display: list-item'

yes

visual

margin

{1,4} inherit

XX

no

refer to width of containing block

visual

margin-top margin-right margin-bottom_6789w.net_ margin-left

inherit

0

no

refer to width of containing block

visual

marker-offset

auto inherit

auto

elements with 'display: marker'

no

visual

marks

[ crop cross ] none inherit

none

page context

N/A

visual, paged

max-height

none inherit

max-width

none inherit

CSS3語言開發是朝著模組化發展的。以前的規範作為一個模組實在是太龐大而且比較複雜，所以，把它分解為一些小的模組，更多新的模組也被加入進來。

左邊這個佈局複雜的三欄網頁來說，如果使用CSS3Grid佈局的話，我們只需這樣寫：

body{columns:3;column-gap:0.5in;}

img{float:pagetopright;width:3gr;}

border-color:

border-top-color: /*給上邊框上色*/

border-right-color: /*給右邊框上色*/

border-bottom-color: /*給下邊框上色*/

border-left-color: /*給左框上色*/