Edit in JSFiddle

<span data-title="Retro Design" id="ex1">Retro Design</span>

body{font-size:100px; font-family:helvetica, sans-serif; letter-spacing:-0.04em;}

#ex1 {
    color: rgba(0, 0, 255, 0.5);
    position: relative;
    display:block;
}

#ex1:after {
    color: rgba(255, 0, 0, 0.5);
    content: attr(data-title);
    left: 5px;
    position: absolute;
    top: 5px;
}