body {
  background-color: #efefef;
}

#loading-waves {
  position: fixed;
  left: 50%;
  top: 25%;
  margin-left: -128px;
  margin-top: -128px;
  width: 256px;
  min-height: 256px;
  text-align: center;
}

#loading-waves span {
  color: #0073cf;
  font-family: sans-serif, Arial, Helvetica;
}

#loading-waves .wave {
  transform-origin: center center;
  animation: pulse-me 3s linear infinite;
  opacity: 0;
}

#loading-waves .wave.second {
  animation-delay: 1s;
}

#loading-waves .wave.third {
  animation-delay: 2s;
}

@keyframes pulse-me {
  0% {
    transform: scale(.25);
    opacity: 0.1;
  }
  70% {
    opacity: 0.09;
  }
  100% {
    transform: scale(1);
    opacity: 0;
  }
}