.blink{
  
  -webkit-animation: glowing 1500ms infinite;
  -moz-animation: glowing 1500ms infinite;
  -o-animation: glowing 1500ms infinite;
  animation: glowing 1500ms infinite;
}

@-webkit-keyframes glowing {
  0% { background-color: #104554; -webkit-box-shadow: 0 0 3px #104554; }
  50% { background-color: #4E8D9E; -webkit-box-shadow: 0 0 40px #4E8D9E; }
  100% { background-color: #104554; -webkit-box-shadow: 0 0 3px #104554; }
}

@-moz-keyframes glowing {
  0% { background-color: #104554; -moz-box-shadow: 0 0 3px #104554; }
  50% { background-color: #4E8D9E; -moz-box-shadow: 0 0 40px #4E8D9E; }
  100% { background-color: #104554; -moz-box-shadow: 0 0 3px #104554; }
}

@-o-keyframes glowing {
  0% { background-color: #104554; box-shadow: 0 0 3px #104554; }
  50% { background-color: #4E8D9E; box-shadow: 0 0 40px #4E8D9E; }
  100% { background-color: #104554; box-shadow: 0 0 3px #104554; }
}

@keyframes glowing {
  0% { background-color: #104554; box-shadow: 0 0 3px #104554; }
  50% { background-color: #4E8D9E; box-shadow: 0 0 40px #4E8D9E; }
  100% { background-color: #104554; box-shadow: 0 0 3px #104554; }
}