html {
  background-image: white;
}

body {
  width: 600px;
  text-align: left;
  margin: 0px auto;
  font-family: Arial, Helvetica, sans-serif;
}

h1 {
  font-size: 40px;
}

p {
  font-size: 19px;
}

button {
  margin: 7px;
  padding: 10px;
  font-size: 15px;
  background-image: linear-gradient(white, grey);
}