They may appear in any order. Attribute names are always case-insensitive.
Attribute values are generally case-insensitive.
It allows content to stop being flowed around the floated element. No special line breaking effects are applied relative to the floating element. LEFT - Breaks line after this element and moves down vertically until the right margin is clear of floated objects. Values are automatically converted to the TYPE attribute, if present. Specified as a positive integer.