:root {
  --html-bg: rgb(245, 250, 255);
  --accent-color: rgb(50, 150, 220);
  --text-color: rgb(0, 30, 120);
  --link-color: rgb(0, 100, 255);
}
html {
  background-color: var(--html-bg);
  background-image: url("../bg/cross-splash.svg");
  background-repeat: no-repeat;
  background-position: bottom right;
  background-attachment: fixed;
  background-size: 60%;
}
body {
  max-width: 800px;
  font-family: 'MS UI Gothic', 'Arial Narrow', Arial, sans-serif;
  color: var(--text-color);
}
::selection {color: var(--html-bg);background: var(--accent-color);}
header {
  padding: .5rem;
  line-height: 1;
  background-color: var(--html-bg);
  background-image: url("../bg/cross-splash.svg");
  background-repeat: no-repeat;
  background-position: bottom right;
  background-size: 90%;
  h1 {
    margin: 0;
    margin-block-start: 1rem;
    font-family: var(--font-acidic);
    font-size: 5em;
    font-weight: normal;
    color: var(--accent-color);
  }
  p {margin: 0;}
  span {background-image: radial-gradient(var(--html-bg) 70%, transparent);}
}
nav {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  padding-block: 1rem;
  padding-inline: .5rem;
  a::after {content: "|";}
}
h2, h3 {
  margin: 0;
  font-family:'Courier New', Courier, monospace;
}
hgroup p {margin: 0;}
section  {margin-block-end: 4rem;
  article {margin-block-end: 2rem;}
}
a {color: var(--link-color);}

@media (width >= 500px) {
body {
  display: grid;
  grid-template-columns: min-content auto;
  grid-template-rows: auto auto;
}
header {
  grid-column: 1/3;
  grid-row: 1/2;
}
nav {
  display: initial;
  text-align: end;
  a {
    display: block;
    padding-inline: .2rem;
    --r: 1rem;
    border-start-start-radius: var(--r);
    border-end-start-radius: var(--r);
    &:hover {
      color: var(--html-bg);
      box-shadow: inset -5em 0 3em var(--accent-color);
    }
  }
}
}