body {

}
body header, body header nav ul li, body section, body footer {

}
a:link, a:visited {
  color: #ffffff;
  text-decoration: none;
}
body header nav ul li {
  border: 1px solid blue;
}
body section nav section {
  border-top: 1px solid blue;
}
body section nav ul li {
  border: 1px solid blue;
}