body {
  display: flex;
  min-height: 100vh;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
}

input[type=text] {
  padding: 10px;
  border-radius: 5px;
  width: 300px;
  border: 2px solid #ddd;
}

input[type=submit] {
  padding: 10px 20px;
  border-radius: 5px;
  border: 2px solid #ddd;
}