The border-block-start-color CSS property defines the color of the logical block-start border of an element, which maps to a physical border color depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-color, border-right-color, border-bottom-color, or border-left-color property depending on the Values defined for writing-mode, direction, and text-orientation....border-left-color property depending on the values defined for writing-mode ,...border-block-start-color: #4c5d21; /* Global values */ border-block-start-color:...