body {
  background-color: #66ffff;
  display: block;
}

header {
  background-color: #66ffff;
  text-align: center;
}

nav {
  background-color: #3366ff;
  margin-left: auto;
  margin-right: auto;
  min-width: 16em;
  max-width: 1em;
  padding-bottom: 0.5em;
  padding-top: 0.5em;
}

section {
  border-top-style: solid;
  border-right-style: solid;
  border-bottom-style: solid;
  border-left-style: solid;
  border-top-width: 2px;
  border-right-width: 2px;
  border-bottom-width: 2px;
  border-left-width: 2px;
  text-align: center;
  margin-top: 0em;
  margin-right: auto;
  margin-bottom: 0em;
  margin-left: auto;
  padding-top: 0.0em;
  padding-right: 0em;
  padding-bottom: 0.5em;
  padding-left: 0em;
  max-width: 15em;
}

a {
  background-color: #ffcc00;
  text-decoration: none;
  padding-top: 1em;
  padding-right: 0em;
  padding-bottom: 1em;
  padding-left: 0em;
  min-width: 14em;
  display: inline-block;
  margin-top: 0.1em;
  margin-right: 0em;
  margin-bottom: 0.1em;
  margin-left: 0em;
  max-width: 14em;
}

a:hover {
  background-color: red;
}

a:hover {
  color: white;
}