span.ripple {
  position: absolute;
  border-radius: 50%;
  transform: scale(0);
  animation: ripple 350ms linear;
  background-color: rgba(255, 255, 255, 0.3);
  border: 0px;
  outline: 0px;
}

span.hover-ripple {
  position: absolute;
  border-radius: 50%;
  transform: scale(0);
  animation: hover-ripple 550ms linear;
  background-color: rgba(255, 255, 255, 0.3);
  border: 0px;
  outline: 0px;
}

@keyframes ripple {
  to {
    transform: scale(3);
    opacity: 0;
  }
}

@keyframes hover-ripple {
  to {
    transform: scale(3);
  }
}

._button-ripple {
  position: relative;
  overflow: hidden;
}