CSS Border-left-width Property
Reference showing how to use the border-left-width property of CSS.
The border-left-width Obviously sets the width of the left-border.
The attached example will set the width of the border to the left, to exactly 1px.
Possible Values
Read Units of Measurement to understand the values
Example
div {
border-left-width: 1px;
}
Inherited? NO!