html {
  height: 100%;
}

body {
  height: 100%;
  margin: 0;
  overflow: hidden;
}

.app-container {
  height: 100%;
  overflow: auto;
}

.app-centering {
  -webkit-box-align: center;
     -ms-flex-align: center;
        align-items: center;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  height: 100%;
  -webkit-box-pack: center;
     -ms-flex-pack: center;
   justify-content: center;
}

.app-spinner__noscript {
  color: red;
  font-weight: bold;
  left: 0;
  position: absolute;
  right: 0;
  text-align: center;
  top: 0;
}

.app-spinner__container {
  height: 300px;
  overflow: hidden;
  position: relative;
  text-align: center;
  width: 300px;
}

.app-spinner__ring {
  -webkit-animation: app-spinner__ring-anime 3s infinite linear;
          animation: app-spinner__ring-anime 3s infinite linear;
  background-color: #8cf;
  background: -webkit-gradient(linear, left top, right top, color-stop(10%, #8cf), color-stop(50%, transparent));
  background: linear-gradient(to right, #8cf 10%, transparent 50%);
  border-radius: 50%;
  height: 100%;
  position: absolute;
  width: 100%;
}

.app-spinner__ring:before {
  background-color: #8cf;
  border-radius: 100% 0 0 0;
  bottom: 50%;
  content: '';
  left: 0;
  position: absolute;
  right: 50%;
  top: 0;
}

.app-spinner__ring:after {
  background-color: white;
  border-radius: 50%;
  bottom: 1px;
  content: '';
  left: 1px;
  position: absolute;
  right: 1px;
  top: 1px;
}

@-webkit-keyframes app-spinner__ring-anime {
  0% {
    -webkit-transform: rotate(0deg);
            transform: rotate(0deg);
  }

  100% {
    -webkit-transform: rotate(360deg);
            transform: rotate(360deg);
  }
}

@keyframes app-spinner__ring-anime {
  0% {
    -webkit-transform: rotate(0deg);
            transform: rotate(0deg);
  }

  100% {
    -webkit-transform: rotate(360deg);
            transform: rotate(360deg);
  }
}

.app-spinner__text {
  -webkit-box-align: center;
     -ms-flex-align: center;
        align-items: center;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
     -ms-flex-direction: column;
         flex-direction: column;
  height: 100%;
  -webkit-box-pack: center;
     -ms-flex-pack: center;
   justify-content: center;
  position: absolute;
  width: 100%;
}