body {
  margin: 0;
  background: #333;
  overflow: hidden;
  font-family: 'Pretendard Variable', Pretendard, -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
}

#letterfield {
  position: fixed;
  left: 0;
  top: 0;
  width: 100vw;
  height: 100vh;
  display: block;
}