font-synthesis
Baseline Widely available *
This feature is well established and works across many devices and browser versions. It’s been available across browsers since 2022年1月.
* Some parts of this feature may have varying levels of support.
font-synthesis CSS 属性控制浏览器可以合成（synthesize）哪些缺失的字体，粗体或斜体。
尝试一下
font-synthesis: weight style small-caps; font-synthesis: none; font-synthesis: weight; font-synthesis: style; font-synthesis: small-caps; font-synthesis: position; <section class="default-example" id="default-example"> <div class="transition-all" id="example-element"> <p class="english"> This font does not include <span class="bold">bold</span>, <span class="italic">italic</span>, <span class="small-caps">small-caps</span>, and <span class="sub">subscript</span> or <span class="sup">superscript</span> variants. </p> <p class="chinese"> 中文排版通常不运用<span class="bold">粗体</span>或<span class="italic" >斜体</span ><span class="sub">常不</span><span class="sup">运用</span>。 </p> </div> </section> @font-face { font-family: Oxygen; font-style: normal; font-weight: 400; src: url("https://fonts.gstatic.com/s/oxygen/v14/2sDfZG1Wl4LcnbuKjk0m.woff2") format("woff2"); } /* [108] */ @font-face { font-family: "Ma Shan Zheng"; font-style: normal; font-weight: 400; font-display: swap; src: url("https://fonts.gstatic.com/s/mashanzheng/v10/NaPecZTRCLxvwo41b4gvzkXaRMGEFoZJFdX0wQ5Xo5Hr21L9zCcRFhbSe5Nk0pIMuUkHEA.108.woff2") format("woff2"); } /* [110] */ @font-face { font-family: "Ma Shan Zheng"; font-style: normal; font-weight: 400; font-display: swap; src: url("https://fonts.gstatic.com/s/mashanzheng/v10/NaPecZTRCLxvwo41b4gvzkXaRMGEFoZJFdX0wQ5Xo5Hr21L9zCcRFhbSe5Nk0pIMuUkHEA.110.woff2") format("woff2"); } /* [117] */ @font-face { font-family: "Ma Shan Zheng"; font-style: normal; font-weight: 400; font-display: swap; src: url("https://fonts.gstatic.com/s/mashanzheng/v10/NaPecZTRCLxvwo41b4gvzkXaRMGEFoZJFdX0wQ5Xo5Hr21L9zCcRFhbSe5Nk0pIMuUkHEA.117.woff2") format("woff2"); } /* [118] */ @font-face { font-family: "Ma Shan Zheng"; font-style: normal; font-weight: 400; font-display: swap; src: url("https://fonts.gstatic.com/s/mashanzheng/v10/NaPecZTRCLxvwo41b4gvzkXaRMGEFoZJFdX0wQ5Xo5Hr21L9zCcRFhbSe5Nk0pIMuUkHEA.118.woff2") format("woff2"); } /* [119] */ @font-face { font-family: "Ma Shan Zheng"; font-style: normal; font-weight: 400; font-display: swap; src: url("https://fonts.gstatic.com/s/mashanzheng/v10/NaPecZTRCLxvwo41b4gvzkXaRMGEFoZJFdX0wQ5Xo5Hr21L9zCcRFhbSe5Nk0pIMuUkHEA.119.woff2") format("woff2"); } .english { font-size: 1.2em; font-family: Oxygen; } .chinese { font-size: 1.2em; font-family: "Ma Shan Zheng"; } .bold { font-weight: bold; } .italic { font-style: italic; } .small-caps { font-variant: small-caps; } .sub { font-variant: sub; } .sup { font-variant: super; } 大多数标准西方字体包含斜体和粗体变体，但许多新颖（novelty）的字体不包括这些。用于中文、日文、韩文和其他语标文字（logographic script）的字体往往不含这些变体，同时，从默认字体中生成、合成这些变体可能会妨碍文本的易读性。在这些情况下，可能最好关闭浏览器默认的 font-synthesis 字体合成特性。
| 初始值 | weight style small-caps position |
|---|---|
| 适用元素 | 所有元素和文本. It also applies to ::first-letter and ::first-line. |
| 是否是继承属性 | 是 |
| 计算值 | as specified |
| 动画类型 | 离散值 |
语法
此属性（的值）可采用下列任意一种形式：
- 关键词
none - 关键词
weight或style - 关键词
weight和style。
属性值
形式化语法
font-synthesis =
none |
[ weight || style || small-caps || position ]
示例
HTML
html
<em class="syn">Synthesize me! 站直。</em> <br /> <em class="no-syn">Don't synthesize me! 站直。</em> CSS
css
em { font-weight: bold; } .syn { font-synthesis: style weight; } .no-syn { font-synthesis: none; } 结果
规范
| Specification |
|---|
| CSS Fonts Module Level 4 # font-synthesis |
浏览器兼容性
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