units-per-em

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已废弃 SVG 2
该特性已经从 Web 标准中删除,虽然一些浏览器目前仍然支持它,但也许会在未来的某个时间停止支持,请尽量不要使用该特性。

The units-per-em attribute specifies the number of coordinate units on the "em square", an abstract square whose height is the intended distance between lines of type in the same type size. This is the size of the design grid on which glyphs are laid out.

Note: This value is almost always necessary as nearly every other attribute requires the definition of a design grid.

Only one element is using this attribute: <font-face>

Usage notes

Value <number>
Default value 1000
Animatable No
<number>
This value indicates the the number of coordinate units on the em square.

Specifications

Specification Status Comment
Scalable Vector Graphics (SVG) 1.1 (Second Edition)
units-per-em
Recommendation Initial definition

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
units-per-em
Deprecated
Chrome ? Edge ? Firefox ? IE ? Opera ? Safari ? WebView Android ? Chrome Android ? Firefox Android ? Opera Android ? Safari iOS ? Samsung Internet Android ?

Legend

Compatibility unknown  
Compatibility unknown
Deprecated. Not for use in new websites.
Deprecated. Not for use in new websites.