.loader{
  min-height: 100vh;
  width: 100vw;
  position: absolute;
  top: 0;
  animation: mymove 5s infinite;
}

@keyframes mymove {
  0% {background-color: rgba(89, 188, 249, 0.6);}
  30% {background-color: rgba(89, 188, 249, 0.75);}
  50% {background-color: rgba(66, 135, 245, 0.9);}
  80% {background-color: rgba(89, 188, 249, 0.75);}
  100% {background-color: rgba(89, 188, 249, 0.6);}
}

.heartbeat{
  animation: heartbeat 5s infinite;
}

@keyframes heartbeat
{
  0% { transform: scale( .85 ); }
  20%  {    transform: scale( 1 );  }  
  40%  {    transform: scale( .85 );  }
  60%  {    transform: scale( 1 );  }
  80%  {    transform: scale( .85 );  }
  100%  {    transform: scale( .85 );  }
}