font-stretch

Summary

font-stretch 属性为字体定义一个正常或经过伸缩变形的字体外观，这个属性并不会通过伸展/缩小而改变字体的几何外形，如font-feature-settings和font-variant属性，它仅仅意味着当有多种字体可供选择时，会为字体选择最适合的大小。

The two 'e' belong to the same fonts. One is condensed, the other normal and can be selected by 'font-stretch'.

初始值	`normal`
适用元素	all elements. It also applies to `::first-letter` and `::first-line`.
是否是继承属性	yes
计算值	as specified
Animation type	a font stretch

Syntax

/* Keyword values */
font-stretch: ultra-condensed;
font-stretch: extra-condensed;
font-stretch: condensed;
font-stretch: semi-condensed;
font-stretch: normal;
font-stretch: semi-expanded;
font-stretch: expanded;
font-stretch: extra-expanded;
font-stretch: ultra-expanded;

/* Global values */
font-stretch: inherit;
font-stretch: initial;
font-stretch: unset;

Values

normal: 指定默认字体
semi-condensed, condensed, extra-condensed, ultra-condensed: 小于默认字体，其中 ultra-condensed 是缩的最小的字体
semi-expanded, expanded, extra-expanded, ultra-expanded: 大于默认字体的值

Font stretch values are interpolated in discrete steps. The interpolation happens as though the ordered values are equally spaced real numbers; the result is rounded to the nearest value, with values exactly halfway between two values rounded towards the later value, that is the most expanded one.

Formal syntax

font-stretch = 
  normal              |
  <percentage [0,∞]>  |
  ultra-condensed     |
  extra-condensed     |
  condensed           |
  semi-condensed      |
  semi-expanded       |
  expanded            |
  extra-expanded      |
  ultra-expanded

示例

HTML

<div class="ultra stretch"> This is text with the font extremely expanded</div>
<div class="stretch"> This is text with the font stretched</div>
<div class="normal"> This is text without font stretching</div>
<div class="condensed"> This is text with the font condensed</div>
<div class="ultra condensed"> This is text with the font extremely condensed</div>

CSS

.ultra.stretch{font-stretch: ultra-expanded;}
.stretch {font-stretch: expanded;}
.normal {font-stretch: normal;}
.condensed {font-stretch: condensed;}
.ultra.condensed {font-stretch: ultra-condensed;}

Result

Specifications

Specification
Unknown specification # font-stretch-prop

The CSS property font-stretch was initially defined in CSS 2, but dropped in CSS 2.1 due to lack of implementation experience. It has been newly defined in CSS 3.

Browser compatibility

BCD tables only load in the browser