wall.css

:root {
  font-family: sans-serif;
  font-size: max(5ex, 5vmax);
}

:focus {
  outline-style: dashed;
  outline-width: thick;
}

body {
  margin: auto;
  overflow-wrap: anywhere;
}

figure {
  margin: auto;
  padding-block-end: 2rem;
}

data::first-letter {
  font-size: 1.618em;
}

@media (min-width: 50em) {
  data {
    letter-spacing: 0.618em;
  }
}

blockquote {
  align-items: center;
  display: flex;
  flex-flow: column;
  font-size: 2em;
  font-weight: bold;
  justify-content: center;
  margin: auto;
  min-height: 100vh;
}

figcaption {
  max-width: 10em;
  box-sizing: border-box;
  padding: 5vmin;
  font-family: monospace;
  font-size: 1ch;
}