Properties border-block-*

border-block-start
A shorthand property for border-block-start-width, border-block-start-style and border-block-start-color

border-block-start-color
Sets the color of the border at the start in the block direction

border-block-start-style
Sets the style of the border at the start in the block direction

border-block-start-width
Sets the width of the border at the start in the block direction