@-webkit-keyframes glowPulse {
  from { background-color: #749a02; -webkit-box-shadow: 0 0 10px #b6b6b6; }
  50% { background-color: #91bd09; -webkit-box-shadow: 0 0 20px #fff; }
  to { background-color: #749a02; -webkit-box-shadow: 0 0 10px #b6b6b6; }
}
 
.pulse {
  -webkit-animation-name: glowPulse;
  -webkit-animation-duration: 1s;
  -webkit-animation-iteration-count: infinite;
}