.heartbeat {
	-webkit-animation: heartbeat 1.5s ease-in-out infinite both;
	        animation: heartbeat 1.5s ease-in-out infinite both;
}
 @-webkit-keyframes heartbeat {
    from {
      -webkit-transform: scale(1);
              transform: scale(1);
      -webkit-transform-origin: center center;
              transform-origin: center center;
      -webkit-animation-timing-function: ease-out;
              animation-timing-function: ease-out;
    }
    10% {
      -webkit-transform: scale(0.91);
              transform: scale(0.91);
      -webkit-animation-timing-function: ease-in;
              animation-timing-function: ease-in;
    }
    17% {
      -webkit-transform: scale(0.98);
              transform: scale(0.98);
      -webkit-animation-timing-function: ease-out;
              animation-timing-function: ease-out;
    }
    33% {
      -webkit-transform: scale(0.87);
              transform: scale(0.87);
      -webkit-animation-timing-function: ease-in;
              animation-timing-function: ease-in;
    }
    45% {
      -webkit-transform: scale(1);
              transform: scale(1);
      -webkit-animation-timing-function: ease-out;
              animation-timing-function: ease-out;
    }
  }
  @keyframes heartbeat {
    from {
      -webkit-transform: scale(1);
              transform: scale(1);
      -webkit-transform-origin: center center;
              transform-origin: center center;
      -webkit-animation-timing-function: ease-out;
              animation-timing-function: ease-out;
    }
    10% {
      -webkit-transform: scale(0.91);
              transform: scale(0.91);
      -webkit-animation-timing-function: ease-in;
              animation-timing-function: ease-in;
    }
    17% {
      -webkit-transform: scale(0.98);
              transform: scale(0.98);
      -webkit-animation-timing-function: ease-out;
              animation-timing-function: ease-out;
    }
    33% {
      -webkit-transform: scale(0.87);
              transform: scale(0.87);
      -webkit-animation-timing-function: ease-in;
              animation-timing-function: ease-in;
    }
    45% {
      -webkit-transform: scale(1);
              transform: scale(1);
      -webkit-animation-timing-function: ease-out;
              animation-timing-function: ease-out;
    }
  }