overflow-x
overflow-y
Shortcut attribute of overflow-x and overflow-y, specifies one of the following values:

visible Default. Content is not clipped and scroll bars are not added.
scroll Content is clipped and scroll bars are added, even if the content does not exceed the dimensions of the object.
hidden Content that exceeds the dimensions of the object is not shown.
auto Content is clipped and scrolling is added only when necessary.