.pulse {
  
  
  animation: pulse 8s ease-in-out infinite;
}

@-webkit-keyframes pulse {
0% {
    -webkit-transform: scale(0.5);
    transform: scale(0.5);
}
50% {
   -webkit-transform: scale(0.46);
   transform: scale(0.46);
}
100% {
    -webkit-transform: scale(0.5);
   transform: scale(0.5);
}

}




body {
  margin: 0;
  padding: 0;
  height: 100vh;
  width: 100vw;
}


.center {
height: 100vh;
display: flex;
align-items: center;
justify-content: center;
background-image: linear-gradient(#ffffff, #dddddd);
}