html {
  background-color: skyblue;
}

body {
  max-width: 72em;
  margin: 0 auto;
  padding: 1ex 1em;
  background-color: white;
  box-shadow: 0 0 1em black;
}

h1 {
  margin-top: 0;
}

p {
  text-align: justify;
}

a {
  text-decoration: none;
}

.updated {
  color: #FF0080;
}

footer {
  background-color: #d3edf8;
  margin-bottom: 0;
}