MediaWiki:Common.css

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

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.

/* CSS placed here will be applied to all skins */
#ca-viewsource {
    display: none;
}

/* Disable text selection in article content */
body, #mw-content-text, .mw-parser-output {
  -webkit-user-select: none; /* Safari/Chrome */
  -moz-user-select: none;    /* Firefox */
  -ms-user-select: none;     /* IE/Edge */
  user-select: none;         /* Standard */
}