.loader-grid div {
  animation: loader-grid 1.2s linear infinite;
}
.loader-grid div:nth-child(1) {
  animation-delay: 0s;
}
.loader-grid div:nth-child(2) {
  animation-delay: -0.4s;
}
.loader-grid div:nth-child(3) {
  animation-delay: -0.8s;
}
.loader-grid div:nth-child(4) {
  animation-delay: -0.4s;
}
.loader-grid div:nth-child(5) {
  animation-delay: -0.8s;
}
.loader-grid div:nth-child(6) {
  animation-delay: -1.2s;
}
.loader-grid div:nth-child(7) {
  animation-delay: -0.8s;
}
.loader-grid div:nth-child(8) {
  animation-delay: -1.2s;
}
.loader-grid div:nth-child(9) {
  animation-delay: -1.6s;
}
@keyframes loader-grid {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}