Some content in an element may fall outside the element's rendering
box for a number of reasons (negative margins, absolute positioning,
content exceeding the width/height set for an element, etc.) In
cases where this occurs, the 'overflow-y' property describes what to
do with the content that exceeds the element's height.
Allowed Values
visible
[IE5]
Type: Explicit
Description:
Content is not clipped and may be rendered outside of the element's box.
hidden
[IE5]
Type: Explicit
Description:
Content is clipped and content outside of the element's box is not visible.
The size of the clipping region is defined by the 'clip' property.
scroll
[IE5]
Type: Explicit
Description:
Content is clipped as necessary, but a vertical scrollbar is made available
where necessary to view the additional, non-visible content. If the
Visual media in use is static (such as Print) the content should be
treated as if the value was 'visible'.
auto
[IE5]
Type: Explicit
Description:
This value is browser and media dependent, but should allow for a
vertical scrollbar if possible in case of overflow.