I recently had a project where I needed to account for browser scrollbar pixel widths in CSS. The results coming up in Google were for older browsers from several years ago and didn't mention OS. Thankfully I stumbled across a very useful scrollbar pixel width test. Here are the results (scrollbar sizes tested in each browser, because I'm that curious):

  • OSX (Chrome, Safari, Firefox) - 15px
  • Windows XP (IE7, Chrome, Firefox) - 17px
  • Windows 7 (IE10, IE11, Chrome, Firefox) - 17px
  • Windows 8.1 (IE11, Chrome, Firefox) - 17px
  • Windows 10 (IE11, Chrome, Firefox) - 17px
  • Windows 10 (Edge 12/13) - 12px