body {
  font-family: Georgia, serif;
  background: #f4f4f4;
  color: #333;
}
.wrapper {
  width: 80%;
  margin: auto;
}
header, nav, main, footer {
  margin: 10px 0;
  padding: 10px;
  background: #ffffff;
  border: 1px solid #ccc;
}