article, aside, details, figcaption, figure, footer, header, hgroup, main, nav, section, summary {
  display: block;
}

a:focus {
  outline: thin dotted;
}

a:active, a:hover {
  outline: 0;
}

img {
  border: 0;
}

*, *:after, *:before {
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
}

a {
  outline: none;
  color: #3498db;
  text-decoration: none;
}

a:hover, a:focus {
  color: #528cb3;
}