main[class*='astrobook'] {
  padding: 3rem;
  max-inline-size: 50dvw;
}

html {
  box-sizing: border-box;
  scroll-behavior: smooth;
}

*,
*::after,
*::before {
  box-sizing: inherit;
}

*:focus,
*:focus-visible {
  outline: 2px dashed black;
  outline-color: black;
  outline-offset: 0;
  -webkit-box-shadow: 0 0 0 2px white;
  box-shadow: 0 0 0 2px white;
}

*:focus:not(:focus-visible) {
  outline: none;
  box-shadow: none;
}

blockquote,
body,
figure,
h1,
h2,
h3,
h4,
h5,
h6,
hr,
li,
ol,
p,
pre,
ul {
  margin: 0;
  padding: 0;
}

ul:where([class]) {
  list-style: none;
}

button,
input,
select,
textarea {
  color: inherit;
  font: inherit;
  letter-spacing: inherit;
}

input[type='text'],
textarea {
  inline-size: 100%;
}

fieldset {
  border: none;
  padding: 0;
}

legend {
  margin-block-end: 0.5rem;
  max-inline-size: 100%;
}

input,
textarea {
  border: 1px solid gray;
}

button {
  border: none;
  border-radius: 0;
  background-color: transparent;
  padding: 0;
}

button * {
  pointer-events: none;
}

button:hover {
  cursor: pointer;
}

embed,
iframe,
img,
object,
svg,
video {
  display: block;
  max-width: 100%;
}

table {
  inline-size: 100%;
  table-layout: fixed;
}

[hidden] {
  display: none !important;
}

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

[tabindex='-1'] {
  outline: none !important;
  box-shadow: none !important;
}

[popover] {
  position: absolute;
  inset: auto;
  border: none;
  padding: 0;
}