body {
  margin: 0;
  background-color: black;
  color: white;
  font-size: 1.1em;
}

.screenreader-text {
  position: absolute;
  left: -999px;
}

.screenreader-text:focus {
  position: static;
}

body > div,
header,
main,
section {
  background-color: white;
  color: black;
}

h1 {
  margin: 0;
  padding: .2em 0;
}

h2 {
  padding-top: .83em;
}

a {
  color: #c80000;
  text-decoration: none;
}

a:hover {
  color: black;
}

nav a {
  color: white;
}

.center {
  text-align: center;
}

.left {
  text-align: left;
}

footer {
  padding-top: .3em;
  min-height: 1.7em;
}

footer .copyright {
  float: left;
}

footer nav {
  float: right;
}

footer nav a:hover {
  color: #c80000;
}

@media only screen and (max-width: 600px) {

  header > *,
  main,
  footer {
    padding-left: 1em;
    padding-right: 1em;
  }

  header > * > * {
    display: none;
  }

  h1 {
    display: block;
    text-align: center;
  }

}

@media only screen and (min-width: 601px) {

  header > *,
  main,
  footer {
    padding-left: 15%;
    padding-right: 15%;
  }

  header > * > * {
    vertical-align: middle;
  }

  h1 {
    display: inline-block;
    min-width: 40%;
  }

  header div > img {
    padding-left: 3em;
  }

  header div > span {
    display: inline-block;
  }

  header nav {
    padding: 0 15%;
    background-color: #c80000;
    color: white;
    font-family: Arial, Helvetica, sans-serif;
    font-weight: bold;
    text-transform: uppercase;
  }

  nav ul {
    margin: 0;
    list-style: none inside;
  }

  header nav ul li {
    display: inline-block;
    position: relative;
  }

  header nav ul li > a {
    display: inline-block;
    padding: .5em .8em;
  }

  header nav ul li > a:hover {
    background-color: white;
    color: black;
  }

  header nav ul li div {
    display: none;
    position: absolute;
    z-index: 1;
    margin: 0;
    min-width: 10em;
    background-color: black;
  }

  header nav ul li:hover div {
    display: block;
  }

  header nav div > a {
    display: block;
    padding: .5em .8em;
  }

  header nav div > a:hover {
    background-color: yellow;
    color: black;
  }

  .half {
    display: inline-block;
    vertical-align: top;
    width: 48%;
  }

  .separator {
    display: inline-block;
    width: 2%;
  }

  pre {
    font-size: 1.2em;
  }

  .logo {
    height: 130px;
  }

  footer {
    font-size: smaller;
  }

  footer nav ul li {
    display: inline-block;
    padding: 0 .8em;
  }

}