.pulse {

&::before {
  content: '';
  display: block;
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  background-color: inherit;
  border-radius: inherit;
  transition: opacity .3s, transform .3s;
  animation: pulse-animation 1s cubic-bezier(0.24, 0, 0.38, 1) infinite;
  z-index: -1;
}
overflow: visible;
position: relative;

}

@keyframes pulse-animation {

0% {
  opacity: 1;
  transform: scale(1);
}
50% {
  opacity: 0;
  transform: scale(1.5);
}
100% {
  opacity: 0;
  transform: scale(1.5);
}

}