/* --- Heart --- */
.doc-heart {
  color: #c0392b;
  -webkit-animation: heart-beat 1s linear infinite;
  -moz-animation: heart-beat 1s linear infinite;
  -ms-animation: heart-beat 1s linear infinite;
  animation: heart-beat 1s linear infinite;
}
@keyframes heart-beat {
  0% {
    -webkit-transform: scale(1.1);
    -moz-transform: scale(1.1);
    -o-transform: scale(1.1);
    -ms-transform: scale(1.1);
    transform: scale(1.1);
  }
  50% {
    -webkit-transform: scale(0.8);
    -moz-transform: scale(0.8);
    -o-transform: scale(0.8);
    -ms-transform: scale(0.8);
    transform: scale(0.8);
  }
  100% {
    -webkit-transform: scale(1);
    -moz-transform: scale(1);
    -o-transform: scale(1);
    -ms-transform: scale(1);
    transform: scale(1);
  }
}
@-moz-keyframes heart-beat {
  0% {
    -moz-transform: scale(1.1);
    transform: scale(1.1);
  }
  50% {
    -moz-transform: scale(0.8);
    transform: scale(0.8);
  }
  100% {
    -moz-transform: scale(1);
    transform: scale(1);
  }
}
@-webkit-keyframes heart-beat {
  0% {
    -webkit-transform: scale(1.1);
    transform: scale(1.1);
  }
  50% {
    -webkit-transform: scale(0.8);
    transform: scale(0.8);
  }
  100% {
    -webkit-transform: scale(1);
    transform: scale(1);
  }
}
@-ms-keyframes heart-beat {
  0% {
    -ms-transform: scale(1.1);
    transform: scale(1.1);
  }
  50% {
    -ms-transform: scale(0.8);
    transform: scale(0.8);
  }
  100% {
    -ms-transform: scale(1);
    transform: scale(1);
  }
}