Font border

by infous

HTML

<h1>Heading</h1>

CSS

h1 {
    font-weight: bold;
    font-size: 400%;
    color: yellow;
    text-shadow: 1px 0px 0px red, -1px 0px 0px red, 0px 1px 0px red, 0px -1px 0px red;
}