body::before {
  content: "TEST\00a0VERSION";
  position: fixed;
  top: 50%;
  margin-top: -.5em;
  left: -50%;
  width: 200%;
  font-size: 10em;
  font-weight: bold;
  text-align: center;
  opacity: .05;
  transform: rotate(-33deg);
  border: .05em solid;
  pointer-events: none;
  z-index: 1000;
}