@keyframes blink {
  0.01% {
    opacity: 0;
  }
  50% {
    opacity: 0;
  }
  50.01% {
    opacity: 1;
  }
}
@keyframes scanline {
  0.01% {
    height: 0;
  }
  99.99% {
    height: 100%;
  }
  100% {
    height: 0;
  }
}
html {
  font-family: SFMono-Regular, Consolas, Liberation Mono, Menlo, Courier, monospace;
  text-shadow: 0 0 5px rgba(255, 255, 255, 0.3);
  background-color: #0f0000;
  background-image: url(http://api.thumbr.it/whitenoise-200x200.png?background=00000000&noise=626262&density=15&opacity=15);
  background-size: 100px;
  color: red;
  height: 100%;
  overflow: hidden;
  border-left: 4px solid rgba(255, 255, 255, 1);
  border-right: 4px solid rgba(255, 255, 255, 1);
}

body {
  margin: 0;
  padding: 16px;
}

p,
pre {
  font-family: SFMono-Regular, Consolas, Liberation Mono, Menlo, Courier, monospace;
  font-size: inherit;
  line-height: 1;
  margin: 0;
  display: block;
  padding: 5px;
}

.blink {
  opacity: 1;
  animation: blink 1s linear infinite;
}

.scanline {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.02);
  animation: scanline 8s linear infinite;
  pointer-events: none;
}