When specifying the size of an item, the CSS logical properties and values module gives you the ability to indicate sizing as it relates to the flow of text (inline and block) rather than physical sizing which relates to the physical dimensions of horizontal and vertical (e.g., left and right). While these flow relative mappings may well become the default for many of us, in a design you may well use both physical and logical sizing. You might want some features to always relate to the physical dimensions whatever the writing mode.

inline-size
block-size
min-inline-size
min-block-size
max-inline-size
max-block-size

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