.letter {
  border: 1px solid #ccc;
  padding: 30px;
  margin: 30px;
  background-color: #f7f7f7;
  border-radius: 10px;
  font-size: 1.2em;
}

.logo {
  text-align: center;
  margin-bottom: 30px;
}

.logo img {
  max-width: 100%;
}

a, a:hover, a:visited {
  color: brown;
}