body {
  font-family: Arial, sans-serif;
  padding: 20px;
}
.container {
  max-width: 600px;
  margin: 0 auto;
}
input[type="text"],
input[type="submit"] {
  width: 100%;
  padding: 10px;
  margin: 10px 0;
  box-sizing: border-box;
  background: beige;
  border-radius: 4px;
}
input[type="submit"] {
  cursor: pointer;
}