CSS だけで作るローディング画像 ⑤
= Type 27 =

.loading {
  position:relative;
}
.loading-bar {
  display: inline-block;
  width: 4px;
  height: 18px;
  border-radius: 4px;
  -webkit-animation: loading 1s ease-in-out infinite;
          animation: loading 1s ease-in-out infinite;
}
.loading-bar:nth-child(1) {
  background-color: #3498db;
  -webkit-animation-delay: 0;
          animation-delay: 0;
}
.loading-bar:nth-child(2) {
  background-color: #c0392b;
  -webkit-animation-delay: 0.09s;
          animation-delay: 0.09s;
}
.loading-bar:nth-child(3) {
  background-color: #f1c40f;
  -webkit-animation-delay: .18s;
          animation-delay: .18s;
}
.loading-bar:nth-child(4) {
  background-color: #27ae60;
  -webkit-animation-delay: .27s;
          animation-delay: .27s;
}
@-webkit-keyframes loading {
  0% {
    -webkit-transform: scale(1);
            transform: scale(1);
  }
  20% {
    -webkit-transform: scale(1, 2.2);
            transform: scale(1, 2.2);
  }
  40% {
    -webkit-transform: scale(1);
            transform: scale(1);
  }
}
@keyframes loading {
  0% {
    -webkit-transform: scale(1);
            transform: scale(1);
  }
  20% {
    -webkit-transform: scale(1, 2.2);
            transform: scale(1, 2.2);
  }
  40% {
    -webkit-transform: scale(1);
            transform: scale(1);
  }
}