.loader {
  position: absolute;
  left: 45%;
  top: 41%;
}
.loader span {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  display: inline-block;
  position: absolute;
  left: 50%;
  margin-left: -10px;
  -webkit-animation: 3s infinite linear;
  -moz-animation: 3s infinite linear;
  -o-animation: 3s infinite linear;
}

.loader h1 {
  color: #525866;
  font-size: 36px;
  letter-spacing: 1px;
  font-weight: 400;
  text-align: center;
}

.loader span:nth-child(2) {
  background: #525866;
  -webkit-animation: kiri 1.2s infinite linear;
  -moz-animation: kiri 1.2s infinite linear;
  -o-animation: kiri 1.2s infinite linear;
}
.loader span:nth-child(3) {
  background: #02adc6;
  z-index: 100;
}
.loader span:nth-child(4) {
  background: #525866;
  -webkit-animation: kanan 1.2s infinite linear;
  -moz-animation: kanan 1.2s infinite linear;
  -o-animation: kanan 1.2s infinite linear;
}

@-webkit-keyframes kanan {
  0% {
    -webkit-transform: translateX(20px);
  }

  50% {
    -webkit-transform: translateX(-20px);
  }

  100% {
    -webkit-transform: translateX(20px);
    z-index: 200;
  }
}
@-moz-keyframes kanan {
  0% {
    -moz-transform: translateX(20px);
  }

  50% {
    -moz-transform: translateX(-20px);
  }

  100% {
    -moz-transform: translateX(20px);
    z-index: 200;
  }
}
@-o-keyframes kanan {
  0% {
    -o-transform: translateX(20px);
  }

  50% {
    -o-transform: translateX(-20px);
  }

  100% {
    -o-transform: translateX(20px);
    z-index: 200;
  }
}

@-webkit-keyframes kiri {
  0% {
    -webkit-transform: translateX(-20px);
    z-index: 200;
  }
  50% {
    -webkit-transform: translateX(20px);
  }
  100% {
    -webkit-transform: translateX(-20px);
  }
}

@-moz-keyframes kiri {
  0% {
    -moz-transform: translateX(-20px);
    z-index: 200;
  }
  50% {
    -moz-transform: translateX(20px);
  }
  100% {
    -moz-transform: translateX(-20px);
  }
}
@-o-keyframes kiri {
  0% {
    -o-transform: translateX(-20px);
    z-index: 200;
  }
  50% {
    -o-transform: translateX(20px);
  }
  100% {
    -o-transform: translateX(-20px);
  }
}