body {
  font: normal 10pt sans-serif;
}

span {
  font-size: 50pt;
}

span.loading {
  animation: swipe 1s linear infinite;
  background: linear-gradient(-33deg, black 45%, white 50%, black 55%);
  background-clip: text;
  background-position: 50% 0;
  background-size: 1000% 100%;
  -webkit-animation: swipe 1s linear infinite;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

@-webkit-keyframes swipe {
    0% {
      background-position: 100% 50%
    }
    100% {
      background-position: 0% 50%
    }
}

@-moz-keyframes swipe {
  0% {
    background-position: 100% 50%
  }
  100% {
    background-position: 0% 50%
  }
}

@keyframes swipe {
  0% {
    background-position: 100% 50%
  }
  100% {
    background-position: 0% 50%
  }
}