html, body {
  height: 100%;
}

.app-loading {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
}

.logo {
  width: 64px;
  height: 64px;
  background: url("/app/img/curiosity-question.png") center center no-repeat;
}

.lds-ring {
  display: inline-block;
  position: relative;
}

.lds-ring div {
  box-sizing: border-box;
  display: block;
  position: absolute;
  width: 128px;
  height: 128px;
  left: -32px;
  top: -48px;
  border: 8px solid #bbb;
  border-radius: 50%;
  animation: lds-ring 1.2s cubic-bezier(0.5, 0, 0.5, 1) infinite;
  border-color: #bbb transparent transparent transparent;
}

.lds-ring div:nth-child(1) {
  animation-delay: -0.45s;
}

.lds-ring div:nth-child(2) {
  animation-delay: -0.3s;
}

.lds-ring div:nth-child(3) {
  animation-delay: -0.15s;
}

@keyframes lds-ring {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}