css border right

1.rightBorder {
2  /*          width style color  */
3  border-right: 5px solid black;
4}

1.leftBorder {
2  /*           width style color  */
3  border-left: 5px solid black;
4}

1p {
2  border-left: 10px inset green;
3}
4
5h1 {
6  border-left: 15px solid blue;
7}