html {
  line-height: 1.15;
  /* 1 */
  -webkit-text-size-adjust: 100%;
  /* 2 */
}
body {
  margin: 0;
  overflow: hidden;
  width: 100vw;
  height: 100vh;
  display: flex;
  place-content: center;
}
main {
  width: 768px;
  height: 768px;
  overflow: hidden;
}
svg {
  overflow: hidden;
  vertical-align: middle;
  width: 100%;
  height: 100%;
}