how to add black outline to text in css code example

Example 1: css text outline

/* You have 2 options
   The first is experimental */

/* text-stroke */
#example {
	font-size: 1em;
	-webkit-text-stroke: 1px #000000;
}

/* Use 4 shadows
   Probably best to use this until the above is standardised */
#example {
	font-size: 1em;
	text-shadow: -1px -1px 0 #000, 1px -1px 0 #000, -1px 1px 0 #000, 1px 1px 0 #000;
}

Example 2: css text black outline

/* Written for h4 tag, modify as required */
.black-outline{
    -webkit-text-stroke: 1.11px black; /* stroke width and color */
    color: rgb(255, 255, 255);
    -webkit-font-smoothing: antialiased;
    font-weight: bold;
}