@media(max-width:640px){:root.m4 #prod3d,:root.m4 #prod3d *,:root.m4 #prod3d canvas,:root.m4 .mnumlayer,:root.m4 .mnumlayer *,:root.m4 #dgTools,:root.m4 #dgTools *,:root.m4 #dg3d,:root.m4 #dg3d *,:root.m4 #dgPick,:root.m4 #dgPick *,:root.m4 #chainSwitch,:root.m4 #chainSwitch *,:root.m4 .m4subtabs,:root.m4 .m4subtabs *,:root.m4 .msheetback,:root.m4 .msheet .mgrab,:root.m4 .msheet .mshhead{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}}