body {
  width: 100%;
  text-align: center;
}

input {
  display: block;
  width: 600px;
  height: 65px;
  font-size: 40px;
  padding: 10px;
  text-align: center;
  margin: 20px;
}

#submit_button {
  height: 60px;
  font-size: 30px;
  width: 625px;
  -webkit-appearance: button;
}

#main {
  display: inline-block;
}