The top property specifies how far the box's top position is below the top edge of the box's containing block.
The botttom property specifies how far the box's bottom position is above the bottom edge of the box's containing block.
Note: If the height property of the object is "auto" and both the top and bottom properties have a value other than "auto", the height is overridden!
|auto||Default. The browser calculates the top/bottom position|
|length||Sets the top/bottom position in px, cm, etc. from the top/bottom edge of the containing block|
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