space.css

html {
  font-family: sans-serif;
  font-size: max(3ch, 3vmax);
}

body {
  align-items: center;
  display: flex;
  flex-flow: column;
  margin: 0;
  overflow-wrap: anywhere;
  min-height: 100vh;
}

body > * {
  box-sizing: border-box;
  display: flex;
  flex-flow: column;
  justify-content: center;
  margin: 0;
  min-height: 100vh;
}

[href^="#"] {
  text-decoration-style: dotted;
}

[href$="page"] {
  text-decoration-style: dashed;
}

:any-link:hover { 
  text-decoration-style: solid;
}

:focus {
  outline: thick dotted;
}

i {
  font-style: unset;
  font-weight: 500;
}

em {
  font-style: unset;
  font-weight: bold;
}

b {
  font-family: monospace;
}

@media (orientation: portrait) {
  h1 {
    align-items: center;
    margin: auto;
    transform: rotate(72deg);
  }
}

[hidden] {
  display: none;
}