.scanner span {
  color: transparent;
  font-size: 1.4rem;
  position: relative;
  overflow: hidden;
}

.scanner span::before {
  content: "Loading...";
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 100%;
  border-right: 4px solid #17FEFF;
  overflow: hidden;
  color: #17FEFF;
  animation: load91371 2s linear infinite;
}

@keyframes load91371 {
  0%, 10%, 100% {
    width: 0;
  }

  10%,20%,30%,40%,50%,60%,70%,80%,90%,100% {
    border-right-color: transparent;
  }

  11%,21%,31%,41%,51%,61%,71%,81%,91% {
    border-right-color: #17FEFF;
  }

  60%, 80% {
    width: 100%;
  }
}