The border-left-color property sets the color of an element's left border.The border-left-color Property is used to set the color of the left-border in an Element. It is mandatory to declare the border-style or the border-left-style property before the border-left-color property.
Note: Always declare the border-style or the
border-left-style
property before the border-left-color
property. An element must have a border
before you can change the color.
border-left-color: color|transparent|initial|inherit;