title: How to detect if the OS is in dark mode in browsers?
body: <p>Similar to "<a href="https://stackoverflow.com/questions/25207077/how-to-detect-if-os-x-is-in-dark-mode">How to detect if OS X is in dark mode?</a>" only for browsers.</p>
  
  <p>Has anyone found if there is a way to detect if the user's system is in the new OS X Dark Mode in Safari/Chrome/Firefox?</p>
  
  <p>We would like to change our site's design to be dark-mode friendly based on the current operating mode.</p>