how to make border for letters in css

1h1 {
2    /* 1 pixel black shadow to left, top, right and bottom */
3    text-shadow: -1px 0 black, 0 1px black, 1px 0 black, 0 -1px black;
4
5    font-family: sans; color: yellow;
6}

1h1 {
2    -webkit-text-stroke: 2px black; /* width and color */
3
4    font-family: sans; color: yellow;
5}