MediaWiki:Editnotice-4-Main Page-styles.css

Firefox / Safari: Hold Shift while clicking Reload , or press either Ctrl-F5 or Ctrl-R ( ⌘-R on a Mac)
Google Chrome: Press Ctrl-Shift-R ( ⌘-Shift-R on a Mac)
Internet Explorer / Edge: Hold Ctrl while clicking Refresh , or press Ctrl-F5
Opera: Press Ctrl-F5 .

Note: After publishing, you may have to bypass your browser's cache to see the changes.