.turbo-frame--loading {
  display: none;
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
}
turbo-frame {
  display: block;
}
turbo-frame[busy] {
  position: relative;
}
turbo-frame[busy] .turbo-frame--content {
  opacity: .5;
}
turbo-frame[busy] .turbo-frame--loading {
  display: block;
}
turbo-frame .progress-bar__container {
  padding: 2rem 0;
}