a[href="/orders/tracking"] {
  color: #fff !important;
  background-color: #007bff !important;
  padding: 10px 20px;
  border-radius: 4px;
  text-shadow: 0 0 5px #00f;
  box-shadow: 0 0 8px #00f, 0 0 15px #00f;
  animation: glowEffect 1.5s infinite alternate;
}

@keyframes glowEffect {
  0% {
    box-shadow: 0 0 5px #00f, 0 0 10px #00f;
  }
  100% {
    box-shadow: 0 0 15px #00f, 0 0 25px #00f;
  }
}