.aviso-glow {
  /*font-size: 80px;*/
  color: #fff;
  text-align: center;
  -webkit-animation: aviso-glow 0.5s ease-in-out infinite alternate;
  -moz-animation: aviso-glow 0.5s ease-in-out infinite alternate;
  animation: aviso-glow 0.5s ease-in-out infinite alternate;
}

@-webkit-keyframes aviso-glow {
  from {
    text-shadow: 0 0 5px #e63e41, 0 0 20px #e63e41;
  }
  to {
    text-shadow: 0 0 5px #fff000, 0 0 20px #fff000;
  }
}