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目錄 搜尋
簡(jiǎn)介 更新歷史 關(guān)于樣式表 屬性 定位 布局 position z-index top right bottom left clip display float clear visibility overflow overflow-x overflow-y 尺寸 width min-width max-width height min-height max-height 外補(bǔ)白 margin margin-top margin-right margin-bottom margin-left 內(nèi)補(bǔ)白 padding padding-top padding-right padding-bottom padding-left 邊框 border border-width border-style border-color border-top border-top-width border-top-style border-top-color border-right border-right-width border-right-style border-right-color border-bottom border-bottom-width border-bottom-style border-bottom-style border-bottom-color border-left border-left-width border-left-style border-left-color border-radius border-top-left-radius border-top-right-radius border-bottom-right-radius border-bottom-left-radius box-shadow border-image border-image-source border-image-slice border-image-width border-image-outset border-image-repeat 背景 background background-color background-image background-repeat background-attachment background-position background-origin background-clip background-size 顏色 color opacity 字體 font font-style font-variant font-weight font-size font-family font-stretch font-size-adjust 文本 text-transform white-space tab-size word-break word-wrap overflow-wrap text-align text-align-last text-justify word-spacing letter-spacing text-indent vertical-align line-height text-size-adjust 文本裝飾 text-decoration text-decoration-line text-decoration-color text-decoration-style text-decoration-skip text-underline-position text-shadow 書寫模式 direction unicode-bidi writing-mode 列表 list-style list-style-image list-style-position list-style-type 表格 table-layout border-collapse border-spacing caption-side empty-cells 內(nèi)容 content counter-increment counter-reset quotes 用戶界面 appearance text-overflow outline outline-width outline-color outline-style outline-offset nav-index nav-up nav-right nav-down nav-left cursor zoom box-sizing resize ime-mode user-select pointer-events 多列 columns column-width column-count column-gap column-rule column-rule-width column-rule-style column-rule-color column-span column-fill column-break-before column-break-after column-break-inside 伸縮盒(舊) box-orient box-pack box-align box-flex box-flex-group box-ordinal-group box-direction box-lines 伸縮盒(新) flex flex-grow flex-shrink flex-basis flex-flow flex-direction flex-wrap align-content align-items align-self justify-content order 變換 transform transform-origin transform-style perspective perspective-origin backface-visibility 過(guò)渡 transition transition-property transition-duration transition-timing-function transition-delay 動(dòng)畫 animation animation-name animation-duration animation-timing-function animation-delay animation-iteration-count animation-direction animation-play-state animation-fill-mode 打印 page page-break-before page-break-after page-break-inside 媒體查詢 width height device-width device-height orientation aspect-ratio device-aspect-ratio color color-index monochrome resolution scan grid Only IE scrollbar-3dlight-color scrollbar-darkshadow-color scrollbar-highlight-color scrollbar-shadow-color scrollbar-arrow-color scrollbar-face-color scrollbar-track-color scrollbar-base-color filter behavior Only webkit -webkit-text-fill-color -webkit-text-stroke -webkit-text-stroke-width -webkit-text-stroke-color -webkit-box-reflect -webkit-tap-highlight-color -webkit-user-drag -webkit-overflow-scrolling 選擇符 元素選擇符 通配選擇符(*) 類型選擇符(E) ID選擇符(E#id) 類選擇符(E.class) 關(guān)系選擇符 包含選擇符(E F) 子選擇符(E>F) 相鄰選擇符(E+F) 兄弟選擇符(E~F) 屬性選擇符 E[att] E[att="val"] E[att~="val"] E[att^="val"] E[att$="val"] E[att*="val"] E[att|="val"] 偽類選擇符 E:link E:visited E:hover E:active E:focus E:lang(fr) E:not(s) E:root E:first-child E:last-child E:only-child E:nth-child(n) E:nth-last-child(n) E:first-of-type E:last-of-type E:only-of-type E:nth-of-type(n) E:nth-last-of-type(n) E:empty E:checked E:enabled E:disabled E:target @page:first @page:left @page:right 偽對(duì)象選擇符 E:first-letter/E::first-letter E:first-line/E::first-line E:before/E::before E:after/E::after E::placeholder E::selection 語(yǔ)法與規(guī)則 !important /*comment*/ @import @charset @media @font-face @page @keyframes @supports 取值與單位 長(zhǎng)度 <length> em ex ch rem vw vh vmax vmin cm mm q in pt pc px 角度 <angle> deg grad rad turn 時(shí)間 <time> s ms 頻率 <frequency> Hz kHz 布局 <fraction> <grid> fr gr 分辨率 <resolution> dpi dpcm dppx 顏色 <color> Color Name HEX RGB RGBA HSL HSLA transparent currentColor 文本 inherit initial unset <string> <url> <identifier> 函數(shù) calc() toggle() 生成內(nèi)容 counter() counters() attr() 圖像 <image> image() image-set() <gradient> linear-gradient() radial-gradient() repeating-linear-gradient() repeating-radial-gradient() 數(shù)字 <number> <integer> <percentage> 附錄 顏色關(guān)鍵字 媒體類型 CSS Hack 條件Hack 屬性級(jí)Hack 選擇符級(jí)Hack 問(wèn)題和經(jīng)驗(yàn) Bugs和解決方案 技巧和經(jīng)驗(yàn) 其它經(jīng)驗(yàn)
文字

語(yǔ)法:

font-size:<absolute-size> | <relative-size> | <length> | <percentage>

<absolute-size> = xx-small | x-small | small | medium | large | x-large | xx-large

<relative-size> = smaller | larger

默認(rèn)值medium

適用于:所有元素

繼承性:有

動(dòng)畫性:是

計(jì)算值:指定值

取值:

  • <absolute-size>:根據(jù)對(duì)象字號(hào)進(jìn)行調(diào)節(jié)。以 medium 作為基礎(chǔ)參照,xx-small相當(dāng)于medium 3/5 (h6),x-small: 3/4,small: 8/9 (h5),medium: 1 (h4),large: 6/5 (h3),x-large: 3/2 (h2),xx-large: 2/1 (h1),

  • <relative-size>:相對(duì)于父對(duì)像中字號(hào)進(jìn)行相對(duì)調(diào)節(jié)。使用成比例的em單位計(jì)算。

  • <length>:用長(zhǎng)度值指定文字大小。不允許負(fù)值。

  • <percentage>:用百分比指定文字大小。其百分比取值是基于父對(duì)象中字體的尺寸。不允許負(fù)值。

說(shuō)明:

設(shè)置或檢索對(duì)象中的字體尺寸。
  • 對(duì)應(yīng)的腳本特性為fontSize

兼容性:

ValuesIEFirefoxChromeSafariOperaiOS SafariAndroid BrowserAndroid Chrome
Basic Support6.0+2.0+4.0+3.1+3.5+3.2+2.1+18.0+

示例:

實(shí)例

<!DOCTYPE html>
<html lang="zh-cmn-Hans">
<head>
<meta charset="utf-8" />
<title>font-size_CSS參考手冊(cè)_web前端開(kāi)發(fā)參考手冊(cè)系列</title>
<meta name="author" content="Joy Du(飄零霧雨), dooyoe@gmail.com, www.doyoe.com" />
<style>
.test p{margin:15px 0;border:1px solid #000;}
.xx-small p{font-size:xx-small;}
.x-small p{font-size:x-small;}
.small p{font-size:small;}
.medium p{font-size:medium;}
.large p{font-size:large;}
.x-large p{font-size:x-large;}
.xx-large p{font-size:xx-large;}
.smaller p{font-size:smaller;}
.larger p{font-size:larger;}
.float p{font-size:20px;}
.percentage{font-size:20px;}
.percentage span{font-size:60%;}
</style>
</head>
<body>
<ul class="test">
	<li class="xx-small">
		<strong>尺寸大小為xx-small:</strong>
		<p>xx-small尺寸的文字。</p>
	</li>
	<li class="x-small">
		<strong>尺寸大小為x-small:</strong>
		<p>x-small尺寸的文字。</p>
	</li>
	<li class="small">
		<strong>尺寸大小為small:</strong>
		<p>small尺寸的文字。</p>
	</li>
	<li class="medium">
		<strong>尺寸大小為medium:</strong>
		<p>medium尺寸的文字。</p>
	</li>
	<li class="large">
		<strong>尺寸大小為large:</strong>
		<p>large尺寸的文字。</p>
	</li>
	<li class="x-large">
		<strong>尺寸大小為x-large:</strong>
		<p>x-large尺寸的文字。</p>
	</li>
	<li class="xx-large">
		<strong>尺寸大小為xx-large:</strong>
		<p>xx-large尺寸的文字。</p>
	</li>
	<li class="samller">
		<strong>尺寸大小為samller:</strong>
		<p>samller尺寸的文字。</p>
	</li>
	<li class="larger">
		<strong>尺寸大小為larger:</strong>
		<p>larger尺寸的文字。</p>
	</li>
	<li class="float">
		<strong>尺寸大小為20px:</strong>
		<p>20px尺寸的文字。</p>
	</li>
	<li class="percentage">
		<strong>尺寸大小為20px:</strong>
		<p>父對(duì)象20px尺寸的文字。<span>我的尺寸只是父對(duì)象的60%</span></p>
	</li>
</ul>
</body>
</html>
			

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