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

main {
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

#tag, #noise {
  width: 800px;
  height: 800px;
}