* {
  box-sizing: border-box;
}

body {
  width: 650px;
  margin: 20px auto;
  font-size: 18px;
}
body h1 {
  text-align: center;
  font-weight: bold;
  font-size: 50px;
}
body h2 {
  text-align: center;
  font-weight: bold;
  font-size: 30px;
  margin-top: 55px;
}
body p {
  text-align: center;
}
body img.addr {
  display: block;
  width: 500px;
  margin: 10px auto;
}
body .return {
  text-align: center;
  font-size: 25px;
}