html, body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: #000;
}

#glitch {
  display: block;
  width: 100vw;
  height: 100vh;
}

/* Outer vignette fading the edges to black */
#vignette {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(circle, rgba(0, 0, 0, 0) 60%, rgba(0, 0, 0, 1) 100%);
}