Css glow animation

glow.css

.glowing-gold {
  -webkit-animation: gold-glow 0.75s ease-in-out infinite alternate;
  -moz-animation: gold-glow 0.75s ease-in-out infinite alternate;
  animation: gold-glow 0.75s ease-in-out infinite alternate;
}

@-webkit-keyframes gold-glow {
  from {
    box-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #FFDD1B, 0 0 70px #FFDD1B, 0 0 80px #FFDD1B, 0 0 100px #FFDD1B, 0 0 150px #FFDD1B;
  }
  to {
    box-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #FFDD1B, 0 0 35px #FFDD1B, 0 0 40px #FFDD1B, 0 0 50px #FFDD1B, 0 0 75px #FFDD1B;
  }
}