surface.css

html {
  font-family: monospace, sans-serif;
  font-size: calc(1em + 1vmax);
  line-height: 1.333;
}

body {
  margin: 2rem;
  overflow-wrap: anywhere;
}

article {
  display: block;
}

fieldset {
  display: contents;
}

fieldset::after {
  display: block;
  content: "";
  margin: 1ex;
}

details,
header,
footer {
  display: block;
  margin-block-start: 1em;
  margin-block-end: 1em;
  max-width: 22em;
}

h2,
nav,
address,
figcaption {
  display: block;
  font: inherit;
  font-size: 2rem;
}

figure {
  display: block;
  margin: 0;
  margin-block-start: 1em;
  margin-block-end: 1em;
}

dfn {
  font: inherit;
  font-size: 3em;
}

i,
var,
samp,
code {
  font: inherit;
}

kbd {
  font: inherit;
  padding-inline-start: 1mm;
  padding-inline-end: 1mm;
  white-space: pre-wrap;
}

input,
button {
  max-width: 100%;
  font-size: .66rem;
}

textarea {
  border-style: dotted;
  font-size: .66rem;
  max-width: 100%;
  width: 33em;
}

[data-oral] {
  font-size: 0;
}

a {
  display: inline-block;
  text-decoration-style: dotted;
}

img {
  max-width: 100%;
  height: auto;
}

:enabled,
:disabled {
  padding: 1ex;
}

[href] {
  padding: 1mm;
}

[hidden] {
  display: none;
}

@media (prefers-color-scheme: light) {
  [value=light] { display: inline }
}

@media (prefers-color-scheme: dark) {
  [value=dark] { display: inline }
}

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

[data-drop] {
  vertical-align: middle;
}