body {
  font-family: sans-serif;
}

#scanningOverlay {
  display: flex;
  align-items: center;
  justify-content: center;
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  background: transparent;
  z-index: 2;
}

@media (min-aspect-ratio: 1/1) {
  #scanningOverlay .inner {
    width: 80vh;
    height: 80vh;
  }
}
@media (max-aspect-ratio: 1/1) {
  #scanningOverlay .inner {
    width: 80vw;
    height: 80vw;
  }
}

#scanningOverlay .inner {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;

  background:
    linear-gradient(to right, white 10px, transparent 10px) 0 0,
    linear-gradient(to right, white 10px, transparent 10px) 0 100%,
    linear-gradient(to left, white 10px, transparent 10px) 100% 0,
    linear-gradient(to left, white 10px, transparent 10px) 100% 100%,
    linear-gradient(to bottom, white 10px, transparent 10px) 0 0,
    linear-gradient(to bottom, white 10px, transparent 10px) 100% 0,
    linear-gradient(to top, white 10px, transparent 10px) 0 100%,
    linear-gradient(to top, white 10px, transparent 10px) 100% 100%;
  background-repeat: no-repeat;
  background-size: 40px 40px;
}

#scanningOverlay.hidden {
  display: none;
}

#loadingOverlay .loader {
  border: 16px solid #222;
  border-top: 16px solid #fff;
  opacity: 0.8;
  border-radius: 50%;
  width: 15em;
  height: 15em;
  animation: spin 2s linear infinite;
}

.overlay {
  display: flex;
  align-items: center;
  justify-content: center;
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  background: transparent;
  z-index: 2;
}

.overlay.hidden {
  display: none;
}

.overlay p {
  position:absolute;
  text-align: center;
  font-family: sans-serif;
  color: #fff;
  text-shadow: 0 0 0.2em #000;
  font-size: 1.5em;
}