html, body {
  margin: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

h1 {

}

a {

}


.bg-test {
  position: fixed;
  inset: 0;
  display: flex;
  padding: 20px; 
  justify-content: center;
  color: #fff;
  user-select: none;
  pointer-events: none;
}

.bg-test pre {
  margin: 0;
  white-space: pre;
  line-height: 1;
  font-size: 2vw;
}