html {
  font-size: 80%;
}

body {
  max-width: 48em;
}

header,
nav,
.container {
  max-width: 100%;
  margin: 0 auto;
  opacity: 1;
}

header {
  background-image: url("hdrbg.png");
  background-size: 120%;
  background-position: center;
  background-repeat: no-repeat;
  padding-bottom: 0em;
}

h1 {
  text-align: center;
  padding: 0.3em;
}

nav {
  padding-bottom: 0em;
  border-bottom: 1px solid #ccc;
  margin: 0 auto;
  width: 100%;
  text-align: center;
}

main {
  padding-top: 0em;
  padding-left: 3em;
  padding-right: 3em;
}

nav a,
footer a {
  display: inline-block;
  text-align: center;
  margin: 0 auto;
  padding: 0em 0.5em;
  border-left: 1px dotted #444;
}

footer {
  margin: 0 auto;
  text-align: center;
  padding: 1em, 0em;
  border-top: 1px solid #ccc;
}

footer a {
  border-left: 0px;
  padding-left: 0.5em;
  padding-right: 0.5em;
}

details {
  padding-top: 1em;
  padding-bottom: 1em;
}

details summary {
  font-size: 1.5em;
}

details summary ul {
  padding-top: 5em;
}