.glow {
    animation: glow 0.5s ease-in-out infinite alternate;
}

@-webkit-keyframes glow {
    from {
        text-shadow: 0 0 1px #fff, 0 0 2px #fff, 0 0 3px #78909C, 0 0 4px #78909C, 0 0 5px #78909C, 0 0 6px #78909C, 0 0 7px #78909C;
        /*text-shadow: 0 0 10px #fff, 0px 0px 1px #f44336;*/
    }
    /*to {*/
    /*text-shadow: 0 0 10px #fff,0px 0px 1px #c62828;*/
    /*text-shadow: 0 0 1px #fff, 0 0 2px #607D8B, 0 0 3px #607D8B, 0 0 4px #607D8B, 0 0 5px #607D8B, 0 0 6px #607D8B, 0 0 7px #607D8B;
    }*/
}