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+ < html lang ="zh-cmn-Hans ">
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+ < head >
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+ < title > unset</ title >
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+ < meta name ="description " content ="CSS3参考手册之: unset " />
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+ < meta name ="keywords " content ="unset, css3取值, css3, css3参考手册 " />
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+ < meta name ="
author "
content ="
Joy Du(飘零雾雨), [email protected] , www.doyoe.com "
/>
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+ </ head >
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+ < body >
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+ < nav id ="guide " class ="g-mod ">
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+ < div class ="from ">
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+ < a href ="http://css.doyoe.com/ " target ="_blank "> CSS3参考手册</ a >
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+ < span > »</ span >
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+ < a href ="../index.htm "> 取值与单位列表</ a >
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+ < span > »</ span >
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+ < a href ="index.htm " id ="category " rel ="values/textual " name ="unset "> 文本值</ a >
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+ < span > »</ span >
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+ </ div >
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+ < div class ="to ">
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+ < span class ="label "> 相关内容:</ span >
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+ < div class ="g-combobox g-transition ">
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+ < a href ="? " class ="g-transition target ">
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+ < strong > 其它文本值参考</ strong >
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+ < span > 选择其它项<!--[if lte IE 7]><ins>IE7 and earlier, Get to die</ins><![endif]--> </ span >
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+ </ a >
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+ </ ul >
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+ </ div >
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+ </ div >
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+ </ div >
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+ </ nav >
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+ < header id ="hd ">
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+ < section id ="title " class ="g-mod ">
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+ < h1 class ="tit "> unset</ h1 >
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+ < ul class ="info ">
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+ < li > < strong > 版本:CSS3</ strong > </ li >
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+ < li > 2015.9.6</ li >
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+ </ ul >
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+ <!-- 插入浏览器信息 -->
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+ </ section >
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+ </ header >
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+ < section id ="bd ">
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+ < section id ="intro " class ="g-mod g-attr ">
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+ < h2 class ="tit "> 说明:</ h2 >
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+ < div class ="cont ">
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+ < strong > 擦除属性申明。</ strong >
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+ < ul >
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+ < li > 一个属性定义了< code class ="g-value "> unset</ code > 值,如果该属性是默认继承属性,该值等同于< code class ="g-value "> inherit</ code > ,如果该属性是非继承属性,该值等同于< code class ="g-value "> initial</ code > </ li >
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+ < li > < code class ="value "> unset</ code > 属于< dfn > CSS-wide</ dfn > 关键字,这表示所有的属性都可以接受该值,本手册为了与规范保持一致,未将该值放置到各属性的取值中。</ li >
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+ < li >
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+ < em class ="g-color-light "> 正常工作的例子:</ em >
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+ < div class ="gquote ">
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+ < p class ="gquote-tit "> < strong > 示例代码:</ strong > </ p >
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+ < blockquote class ="gquote-cont "> < code > < xmp > div {
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+ border: unset;
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+ }
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+ div {
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+ border: initial;
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+ }</ xmp > </ code > </ blockquote >
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+ < p class ="gquote-info "> 如上述代码,2条规则的结果是相同的</ p >
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+ </ div >
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+ </ li >
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+ </ ul >
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+ </ div >
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+ </ section >
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+ < section id ="compatible " class ="g-mod g-attr ">
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+ < h2 class ="tit "> 兼容性:</ h2 >
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+ < div class ="cont ">
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+ < ul class ="support-type ">
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+ < li > < span class ="support "> 浅绿</ span > = 支持</ li >
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+ < li > < span class ="unsupport "> 红色</ span > = 不支持</ li >
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+ < li > < span class ="partsupport "> 粉色</ span > = 部分支持</ li >
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+ </ ul >
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+ < table class ="g-data ">
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+ < th > IE</ th >
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+ < th > Opera</ th >
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+ < th > iOS Safari</ th >
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+ < th > Android Browser</ th >
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+ < th > Android Chrome</ th >
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+ </ tr >
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+ </ thead >
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+ < tbody >
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+ < tr >
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+ < td class ="unsupport " rowspan ="2 "> 6.0-13.0</ td >
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+ < td class ="unsupport "> 2.0-26.0</ td >
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+ < td class ="unsupport "> 4.0-40.0</ td >
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+ < td class ="unsupport " rowspan ="2 "> 6.0-9.0</ td >
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+ < td class ="unsupport "> 15.0-27.0</ td >
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+ < td class ="unsupport " rowspan ="2 "> 6.0-9.0</ td >
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+ < td class ="unsupport "> 2.1-4.4.4</ td >
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+ < td class ="unsupport "> 18.0-39.0</ td >
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+ </ tr >
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+ < tr >
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+ < td class ="support "> 27.0+</ td >
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+ < td class ="support "> 41.0+</ td >
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+ < td class ="support "> 28.0+</ td >
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+ < td class ="support "> 44.0+</ td >
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+ < td class ="support "> 40.0+</ td >
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+ </ tr >
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+ </ tbody >
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