.preloader {
  position: fixed;
  left: 0;
  top: 0;
  z-index: 999;
  width: 100%;
  height: 100%;
  overflow: visible;
  background: #fff;
}

.heartbeat-loader {
  -moz-animation: heartbeat-loader 1300ms ease 0s infinite normal;
  -webkit-animation: heartbeat-loader 1300ms ease 0s infinite normal;
  animation: heartbeat-loader 1300ms ease 0s infinite normal;
  position: absolute;
  text-indent: -9999px;
  background: url('../logos/BX-small-logo-v2.svg') 0 0/60px 60px no-repeat;
  top: 50%;
  left: 50%;
  margin-top: -20px;
  margin-left: -20px;
  width: 60px;
  height: 60px;
  -moz-transform-origin: 50% 50%;
  -ms-transform-origin: 50% 50%;
  -webkit-transform-origin: 50% 50%;
  transform-origin: 50% 50%;
}

@keyframes heartbeat-loader {
  0% {
    -moz-transform: scale(1);
    -ms-transform: scale(1);
    -webkit-transform: scale(1);
    transform: scale(1);
  }
  14% {
    -moz-transform: scale(1.3);
    -ms-transform: scale(1.3);
    -webkit-transform: scale(1.3);
    transform: scale(1.3);
  }
  28% {
    -moz-transform: scale(1);
    -ms-transform: scale(1);
    -webkit-transform: scale(1);
    transform: scale(1);
  }
  42% {
    -moz-transform: scale(1.3);
    -ms-transform: scale(1.3);
    -webkit-transform: scale(1.3);
    transform: scale(1.3);
  }
  70% {
    -moz-transform: scale(1);
    -ms-transform: scale(1);
    -webkit-transform: scale(1);
    transform: scale(1);
  }
}