@keyframes swing{20%{transform:rotate3d(0,0,1,15deg)}40%{transform:rotate3d(0,0,1,-10deg)}60%{transform:rotate3d(0,0,1,5deg)}80%{transform:rotate3d(0,0,1,-5deg)}to{transform:rotate3d(0,0,1,0deg)}}.swing{transform-origin:top center;animation-name:swing}