CSS3 inset text-shadow trick

index.html

<h1 class="inset-text">Inset text-shadow trick</h1> 

s.css

h1 {
    font-family: Helvetica, Arial, sans-serif;
    font-weight: bold;
    font-size: 6em;
    line-height: 1em;
}
.inset-text {
    /* Shadows are visible under slightly transparent text color */
    color: rgba(10,60,150, 0.8);
    text-shadow: 1px 4px 6px #def, 0 0 0 #000, 1px 4px 6px #def;
}
/* Don't show shadows when selecting text */
::-moz-selection { background: #5af; color: #fff; text-shadow: none; }
::selection { background: #5af; color: #fff; text-shadow: none; }