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A.A. Milne’s Winnie-the-Pooh: “If you live to be a hundred, I want to live to be a hundred minus one day so I never have to live without you.”
A.A. Milne

border-block-start-width

The border-block-start-width CSS property defines the width of the logical block-start border of an element, which maps to a physical border width depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-width, border-right-width, border-bottom-width, or border-left-width property depending on the values defined for writing-mode, direction, and text-orientation.
border-block-start-width css reference