body {
  
 
  
  color: white;
  background: black;
  max-width: 544px;
  margin: 0 auto; /* this centers the contents on the page */
  
}
h1 {
  font-family: "Helvetica", serif; /* heading font */
}
p {
  font-family: "Helvetica", sans-serif; /* paragraph font */
}