@font-face {
  font-family: 'IBM-VGA';
  src: url('https://martijnfrazer.nl/dosfont/WebPlus_IBM_VGA_9x14.woff');
}

html, body
{
  background-color: #0000AA;
  color: #fff;
  font-family: 'IBM-VGA';
  font-smooth: never;
  -webkit-font-smoothing: subpixel-antialiased;
  font-size: 21px;
  margin: 0;
  padding: 0;
  line-height: 1;
  text-rendering: geometricPrecision;
}

*
{
  box-sizing: border-box;
  outline: 0;
}

h1, h2, h3, h4, p
{
  font-size: 1rem;
  font-weight: normal;
  margin: 0 0 1rem 0;
  padding: 0;
}

a
{
  color: #FFFF55;
  text-decoration: none;
}
a::before
{
  content: "[";
  color: #fff;
}
a::after
{
  color: #fff;
  content: "]";
}
a:focus::before, 
a:focus::after,
a:hover::before,
a:hover::after
{
  color: #000;
}

img
{
  display: none;
}

ul
{
  list-style-type: none;
  margin: 0 0 1rem 0;
  padding: 0;
}
  ul li
  {
    display: block;
    margin: 0;
    padding: 0;
  }

abbr
{
  text-decoration: none;
}

details
{
  margin: 1rem 0;
}
details[open]
{
  margin-bottom: 2rem;
}
  details summary
  {
    display: inline-block;
    position: relative;
    padding-left: 1rem;
    cursor: pointer;
    color: #FFFF55;
  }
  details summary::marker
  {
    content: "";
  }
  details summary::before
  {
    position: absolute;
    content: "► ";
    left: 0;
  }
  details[open] summary::before
  {
    content: "▼ ";
  }
  details p
  {
    margin: 1rem 0;
    padding: 0 1rem;
  }

header h1,
header p,
main,
aside,
footer
{
  padding: 0 2rem;
}

aside
{
  margin: 2rem 0;
}

header h1
{
  background-color: #AAA;
  color: #000;
}
header p
{
  color: #55FFFF;
}
  header p time
  {
    color: #fff;
  }
  header p time:first-of-type::before
  {
    content: "";
    display: block;
  }
header a
{
  display: inline-block;
}
header a::before,
header a::after
{
  content: "";
}
  a:hover,
  a:focus,
  details summary:hover,
  details summary:focus
  {
    background-color: #FFFF55;
    color: #AA0000;
  }

h2
{
  color: #55FFFF;
}
main p,
aside p,
footer p
{
  color: #fff;
}
  main p em,
  aside p em,
  footer p em
  {
    font-style: normal;
    color: #55FF55;
  }

header a,
section
{
  padding: 1rem;
  background-color: #AAA;
  color: #000;
  box-shadow: 0.5rem 0.5rem 0 #000;
  margin: 1rem 0 2rem 0;
  position: relative;
}
section
{
  margin: 2rem 0;
}
  header a::before,
  section::before
  {
    content: "";
    outline: solid 2px currentColor;
    position: absolute;
    top: 10px;
    right: 5px;
    bottom: 10px;
    left: 5px;
    z-index: 1;
  }
  section > *
  {
    position: relative;
    z-index: 10;
  }
  section h3
  {
    color: #AA0000;
  }
  section p
  {
    color: #000;
  }
    section p em
    {
      color: #AA00AA;
    }
  section a
  {
    background-color: #000;
  }
  section h4
  {
    margin-top: 2rem;
    margin-bottom: 0;
    color: #AA5500;
  }
  section ul li
  {
    margin: 0 0 1rem 0;
  }

footer h3
{
  margin-top: 2rem;
}