Webmasters Gallery

Joe Richardson shared this little trick over on CodePen:

body {
   /* operating system font  */  
   font: caption;
}

• If you’re on Ubuntu this will be the Ubuntu Font.
• If you’re on Yosemite this will be Helvetica.
• If you’re on El Capitan this will be San Francisco.
• If you’re on Microsoft this will be Segoe UI.

Not entirely sure the support of this, but if it works for your needs it’s a lot easier than declaring them directly or sussing it out with JavaScript.

Direct Link to Article — Permalink

font: caption; is a post from CSS-Tricks