.loader-wrapper {
  height: 480px;
  align-content: center;
  display: flex;
}
.loading {
  margin: auto;
}
.loading-bar {
  display: inline-block;
  width: 5px;
  height: 20px;
  border-radius: 5px;
  animation: loading 1s ease-in-out infinite;
}
.loading-bar:nth-child(1) {
  background-color: #3498db;
  animation-delay: 0;
}
.loading-bar:nth-child(2) {
  background-color: #c0392b;
  animation-delay: 0.09s;
}
.loading-bar:nth-child(3) {
  background-color: #f1c40f;
  animation-delay: .18s;
}
.loading-bar:nth-child(4) {
  background-color: #27ae60;
  animation-delay: .27s;
}
.loading-bar:nth-child(5) {
  background-color: #3498db;
  animation-delay: .36s;
}
.loading-bar:nth-child(6) {
  background-color: #c0392b;
  animation-delay: .45s;
}
.loading-bar:nth-child(7) {
  background-color: #f1c40f;
  animation-delay: .54s;
}
.loading-bar:nth-child(8) {
  background-color: #27ae60;
  animation-delay: .63s;
}
.loading-bar:nth-child(9) {
  background-color: #3498db;
  animation-delay: .72s;
}
.loading-bar:nth-child(10) {
  background-color: #c0392b;
  animation-delay: .81s;
}
.loading-bar:nth-child(11) {
  background-color: #f1c40f;
  animation-delay: .90s;
}
.loading-bar:nth-child(12) {
  background-color: #27ae60;
  animation-delay: .99s;
}
@keyframes loading {
  50% {
    transform: scale(1);
  }
  60% {
    transform: scale(1, 2.2);
  }
  70% {
    transform: scale(1, 2.2);
  }
  80% {
    transform: scale(1);
  }
}