Inline-size affects the width or height of an element, which in turn changes the width or height of an element’s box model, depending on the element’s writing-mode.

Reference link.

This is a logical property to support internationalization because some countries (like many Asian countries) will display text from right to left and top to bottom in addition to left-to-right.

Common attributes and corresponding logical attributes:

More of Jerry’s original articles can be found in “Wang Zixi” :