StlyeSheet : Fix separated node diff widget
StlyeSheet : Fix separated node diff widget

ImageEngine/gaffer,GafferHQ/gaffer,johnhaddon/gaffer,hradec/gaffer,GafferHQ/gaffer,hradec/gaffer,lucienfostier/gaffer,hradec/gaffer,andrewkaufman/gaffer,lucienfostier/gaffer,appleseedhq/gaffer,boberfly/gaffer,hradec/gaffer,appleseedhq/gaffer,GafferHQ/gaffer,johnhaddon/gaffer,ImageEngine/gaffer,lucienfostier/gaffer,ImageEngine/gaffer,boberfly/gaffer,andrewkaufman/gaffer,andrewkaufman/gaffer,johnhaddon/gaffer,GafferHQ/gaffer,andrewkaufman/gaffer,johnhaddon/gaffer,andrewkaufman/gaffer,johnhaddon/gaffer,appleseedhq/gaffer,boberfly/gaffer,hradec/gaffer,ImageEngine/gaffer,boberfly/gaffer,lucienfostier/gaffer,GafferHQ/gaffer,appleseedhq/gaffer