body {
  margin: 10px;
  padding: 10px;
}

h3 {
  font-size: larger;
  border-bottom: 1px solid black;
}

form {
  background-color: #fee;
  border: 1px solid black;
  padding: 10px;
}

p.masthead {
  color: darkred;
  text-align: center;
}

p.subhead {
  color: darkred;
  text-align: center;
  font-style: italic;
  font-size: normal;
}

div.letter {
  background-color: #fee; 
  margin: 0 10%; 
  padding: 10px; 
  border: 1px solid black;
}