common.css

Note: After saving, 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: Go to Menu → Settings (Opera → Preferences on a Mac) and then to Privacy & security → Clear browsing data → Cached images and files.

#siteNotice iframe, #p-Advertisement, #n-About, #n-Donate, #n-Policy, #n-All-files{
  display:none;
}

.calContent{
  display:none;
}
.calShowAll, calHideAll, .calContent img, .calHider{
  cursor: pointer;
  cursor: hand;
}