@media (max-width: 800px) {
  header, main, footer {
    width: 100vw;
  }
}

@media screen and (min-width: 801px) {
  header, main, footer {
    width: 768px;
  }
}

body, html {
  width: 100vw;
  margin: 0.5em 0;
}

body {
  color: #222;
  font-family: sans-serif;
  line-height: 1.5;
  background-image: url('../img/background.jpg');
  background-repeat: repeat;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
}

header {
  border-bottom: 1px solid #222;
  background-color: #fff;
  border-radius: 0.5rem 0.5rem 0 0;
}

header h1 {
  margin: 0;
  padding: 1rem;
  font-family: cursive;
}

footer {
  border-top: 1px solid #222;
  padding: 0.5rem 0;
  background-color: #fff;
  border-radius: 0 0 0.5rem 0.5rem;
}

main {
  background-color: #fff;
}

main * , footer * {
  padding: 0 1rem;
}

main * *, footer * * {
  padding: 0;
}

main img {
  max-width: 100%;
  height: auto;
}

main div ul {
  padding-left: 1.5rem;
}

main ul {
  padding-left: 2.5rem;
}

main ol {
  padding-left: 2.5rem;
}

a {
  color: #4b636f;
  text-decoration: none;
}

nav ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
  background-color: #333333;
  display: flex;
}

nav ul li a {
  display: block;
  color: white;
  padding: 14px 16px;
  text-decoration: none;
}

nav ul li a.active {
  background-color: #b7e4fb;
  color: #222;
}

nav ul li a:hover {
  background-color: #111111;
}

img.license {
  height: 32px;
  width: auto;
  vertical-align: middle;
}