body {
  margin: 0;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background: #ffffff;
  font-family: "Hiragino Kaku Gothic ProN", "Hiragino Sans", sans-serif;
  color: #333333;
}

h1 {
  font-size: 3rem;
  font-weight: 600;
}