a:hover {
    /* glow effect on hover */
    text-shadow: -1px 1px 20px #ffc, 1px -1px 20px #fff;

    -webkit-transition: text-shadow 250ms linear 0s;
    -moz-transition: text-shadow 250ms linear 0s;
    -o-transition: text-shadow 250ms linear 0s;
    transition: text-shadow 250ms linear 0s;
}