html,body{
  margin:0;
  padding:0;
}
#app {
  height: 100vh;
}
.first-screen-spinner {
  position: fixed;
  left: 50%;
  top: 42%;
  width: 50px;
  height: 40px;
  margin-left: -25px;
  margin-top: -20px;
  text-align: center;
  font-size: 0;
  z-index: 9999;
}

.first-screen-spinner > div {
  background-color: #929292;
  height: 100%;
  width: 6px;
  margin-left: 3px;
  padding: 0;
  display: inline-block;
  animation: sk-stretchdelay 1.2s infinite ease-in-out;
}

.first-screen-spinner .rect2 {
  animation-delay: -1.1s;
}

.first-screen-spinner .rect3 {
  animation-delay: -1s;
}

.first-screen-spinner .rect4 {
  animation-delay: -0.9s;
}

.first-screen-spinner .rect5 {
  animation-delay: -0.8s;
}

@keyframes sk-stretchdelay {
  0%,
  40%,
  100% {
    transform: scaleY(0.4);
    -webkit-transform: scaleY(0.4);
  }
  20% {
    transform: scaleY(1);
    -webkit-transform: scaleY(1);
  }
}