html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
  width: 100%;
  cursor: default;
}

body {
  background-color: #cccccc;
}

.loader {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  font-family: Arial, sans-serif;
  font-size: 3em;
  font-weight: bold;
  color: transparent;
  user-select: none;
  white-space: nowrap;
}

.loader span {
  text-shadow: 0 0 2px rgba(204, 204, 204, 0.9), 0 15px 25px rgba(0, 0, 0, 0.3), 0 -2px 3px rgba(0, 0, 0, 0.1), 0 -5px 10px rgba(255, 255, 255, 0.5), 0 5px 10px rgba(0, 0, 0, 0.3), 0 3px 4px rgba(255, 255, 255, 0.2), 0 0 20px rgba(255, 255, 255, 0.45);
  animation: loading 3.0s ease-in-out infinite alternate;
}

@keyframes loading {
  to {
    text-shadow: 0 0 2px rgba(204, 204, 204, 0), 0 0 3px rgba(0, 0, 0, 0), 0 0 0 rgba(0, 0, 0, 0), 0 0 0 rgba(255, 255, 255, 0), 0 0 0 rgba(0, 0, 0, 0), 0 0 0 rgba(255, 255, 255, 0), 0 0 0 rgba(255, 255, 255, 0);
    opacity: 0;
  }
}
.loader span:nth-child(1) {
  animation-delay: 0.1s;
}

.loader span:nth-child(2) {
  animation-delay: 0.2s;
}

.loader span:nth-child(3) {
  animation-delay: 0.3s;
}

.loader span:nth-child(4) {
  animation-delay: 0.4s;
}

.loader span:nth-child(5) {
  animation-delay: 0.5s;
}

.loader span:nth-child(6) {
  animation-delay: 0.6s;
}

.loader span:nth-child(7) {
  animation-delay: 0.7s;
}

.loader span:nth-child(8) {
  animation-delay: 0.8s;
}

.loader span:nth-child(9) {
  animation-delay: 0.9s;
}

.loader span:nth-child(10) {
  animation-delay: 1.0s;
}

.loader span:nth-child(11) {
  animation-delay: 1.1s;
}

.loader span:nth-child(12) {
    animation-delay: 1.2s;
  }

  .loader span:nth-child(13) {
    animation-delay: 1.3s;
  }

  .loader span:nth-child(14) {
    animation-delay: 1.4s;
  }

  .loader span:nth-child(15) {
    animation-delay: 1.6s;
  }

  .loader span:nth-child(16) {
    animation-delay: 1.7s;
  }