@font-face {
  font-family: <a-remote-font-name>;
  src: <source> [,<source>]*;
  [font-weight: <weight>];
  [font-style: <style>];
}

https://developer.mozilla.org/index.php?title=En/CSS/%40font-face

Summary
@font-face allows authors to specify online fonts to display text on their webpages. By allowing authors to provide their own fonts, @font-face eliminates the need to depend on the limited number of fonts users have installed on their computers.

Syntax
@font-face {
  font-family: <a-remote-font-name>;
  src: <source> [,<source>]*;
  [font-weight: <weight>];
  [font-style: <style>];
}
Values
<a-remote-font-name> 
Specifies a font name that will be used as font face value for font properties.
<source> 
URL for the remote font file location, or the name of a font on the user's computer in the form local("Font Name").
<weight> 
A font weight value.
<style> 
A font style value.
You can specify a font on the user's local computer by name using the local() syntax. If that font isn't found, other sources will be tried until one is found.

@font-face CSS font injection

css

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