-webkit-text-stroke: 1px red;
/*
1px is the text outline width and red is the color.
NOTE: This may be invisible to Microsoft Edge, FireFox and some other
browsers so, it is wise to use the text-shadow technique instead.
text-shadow: -1px -1px 0 red, 1px -1px 0 red, -1px 1px 0 red, 1px 1px 0 red;
*/