glowing text

<style>
@keyframes glow {
0% {
text-shadow: 0 0 15px #737373;
}

50% {
text-shadow: none;
}

100% {
text-shadow: 0 0 15px #737373;
}
}

@-webkit-keyframes glow {
0% {
text-shadow: 0 0 15px #737373;
}

50% {
text-shadow: 0 0 0;
}

100% {
text-shadow: 0 0 15px #737373;
}
}

#glowing {
-webkit-background-clip: text;
-webkit-text-fill-color: transparent;
-webkit-text-stroke-width: 1px;
-webkit-text-stroke-color: #000;
-webkit-animation: glow 2.0s linear infinite;
-moz-animation: glow 2.0s linear infinite;
-ms-animation: glow 2.0s linear infinite;
-o-animation: glow 2.0s linear infinite;
animation: glow 2.0s linear infinite;
}

</style>
<div id="glowing">text</div>