.loading,
.loadingA,
.loadingC {
  width: 80px;
  height: 40px;
  margin: 0 auto;
  position: fixed;
  top: 400px;
  left: 50%;
  margin-left: -40px;
  z-index: 1000;
}
.loading span,
.loadingA span,
.loadingC span {
  display: inline-block;
  width: 8px;
  height: 100%;
  border-radius: 4px;
  background: #537DDA;
  -webkit-animation: load 1s ease infinite;
}
.loading span:nth-child(2),
.loadingA span:nth-child(2),
.loadingC span:nth-child(2) {
  -webkit-animation-delay: 0.2s;
}
.loading span:nth-child(3),
.loadingA span:nth-child(3),
.loadingC span:nth-child(3) {
  -webkit-animation-delay: 0.4s;
}
.loading span:nth-child(4),
.loadingA span:nth-child(4),
.loadingC span:nth-child(4) {
  -webkit-animation-delay: 0.6s;
}
.loading span:nth-child(5),
.loadingA span:nth-child(5),
.loadingC span:nth-child(5) {
  -webkit-animation-delay: 0.8s;
}
@-webkit-keyframes load {
  0%,
  100% {
    height: 40px;
    background: #537DDA;
  }
  50% {
    height: 70px;
    margin: -15px 0;
    background: #9CBCFF;
  }
}