.loader {
  position : fixed;
  top      : 50%;
  left     : 50%;
  transform: translate3d(-50%, -50%, 0);
}

.dot {
  width        : 24px;
  height       : 24px;
  background   : #3ac;
  border-radius: 100%;
  display      : inline-block;
  animation    : slide 1s infinite;
}

.dot:nth-child(1) {
  animation-delay: 0.1s;
  background     : #32aacc;
}

.dot:nth-child(2) {
  animation-delay: 0.2s;
  background     : #64aacc;
}

.dot:nth-child(3) {
  animation-delay: 0.3s;
  background     : #96aacc;
}

.dot:nth-child(4) {
  animation-delay: 0.4s;
  background     : #c8aacc;
}

.dot:nth-child(5) {
  animation-delay: 0.5s;
  background     : #faaacc;
}

@-moz-keyframes slide {
  0% {
    transform: scale(1);
  }

  50% {
    opacity  : 0.3;
    transform: scale(2);
  }

  100% {
    transform: scale(1);
  }
}

@-webkit-keyframes slide {
  0% {
    transform: scale(1);
  }

  50% {
    opacity  : 0.3;
    transform: scale(2);
  }

  100% {
    transform: scale(1);
  }
}

@-o-keyframes slide {
  0% {
    transform: scale(1);
  }

  50% {
    opacity  : 0.3;
    transform: scale(2);
  }

  100% {
    transform: scale(1);
  }
}

@keyframes slide {
  0% {
    transform: scale(1);
  }

  50% {
    opacity  : 0.3;
    transform: scale(2);
  }

  100% {
    transform: scale(1);
  }
}