epub.css

body {
  margin: 1rem;
  text-align: left;
  font-size: large;
  font-family: Charter, 'Bitstream Charter', 'Sitka Text',
    Cambria, Georgia, serif;
}
h1,
h2,
h3,
h4,
h5,
h6 {
  margin-top: 2em;
  margin-bottom: 1em;
  font-family: Inter, Roboto, 'Helvetica Neue', 'Arial Nova',
    'Nimbus Sans', Arial, sans-serif;
}
h1:first-child {
  margin-top: 0;
}

hr {
  width: 50%;
  margin: 2rem auto;
  border: none;
  border-bottom: 1px solid #333;
}
@media (prefers-color-scheme: dark) {
  hr {
    border-color: rgba(255, 255, 255, 0.5);
  }
}

/* Book subtitle on the frontmatter page */

.subtitle {
  font-size: large;
}

/* Table of contents */

nav#toc ol {
  padding: 0;
  margin-left: 1em;
}
nav#toc ol li {
  margin: 0.25rem 0;
  margin-bottom: 1rem;
  padding: 0;
  font-weight: bold;
  list-style-type: none;
}
nav#toc ol ol li {
  margin-bottom: 0.25rem;
  font-weight: normal;
}

/* Illustrations */

figure {
  margin-block: 1rem;
}
figcaption {
  margin-top: 0.5rem;
  text-align: center;
  color: #767676;
}
@media (prefers-color-scheme: dark) {
  figcaption {
    font-style: italic;
  }
}

/* Code examples */

pre,
code,
pre > code.sourceCode {
  font-size: medium;
  font-family: ui-monospace, 'Cascadia Code',
    'Source Code Pro', Menlo, Consolas, 'DejaVu Sans Mono',
    monospace;
  /* Override `white-space:pre` from Pandoc default styles */
  white-space: pre-wrap !important;
}

/* Tables */

table {
  margin-bottom: 1rem;
  border-top: 2px solid #333;
  border-bottom: 2px solid #333;
  border-collapse: collapse;
}
th {
  padding-block: 0.5rem;
  border-bottom: 1px solid #333;
  text-align: left;
}
tr:first-child td {
  padding-top: 0.5rem;
}
tr:last-child td {
  padding-bottom: 0.5rem;
}
th:not(:last-child),
tr:not(:last-child) {
  padding-right: 1rem;
}

@media (prefers-color-scheme: dark) {
  table,
  th {
    border-color: rgba(255, 255, 255, 0.5);
  }
}

/* Tips */

.tip,
.note,
.warning {
  margin-bottom: 2rem;
  background-color: #dfe8ef;
  border: 2px solid #80a4be;
  border-radius: 0.25rem;
  padding: 1rem;
  color: #333;
}
.tip .title,
.note .title,
.warning .title {
  margin: -1rem;
  margin-bottom: 1rem;
  padding: 0.5rem 1rem;
  font-weight: bold;
  background-color: #80a4be;
  color: #fff;
}
.tip .title p,
.note .title p,
.warning .title p {
  display: flex;
  align-items: center;
  /* TODO: This doesn't work for some reason */
  font-family: Inter, Roboto, 'Helvetica Neue', 'Arial Nova',
    'Nimbus Sans', Arial, sans-serif;
}
.tip .title p::before,
.note .title p::before,
.warning .title p::before {
  content: '☞';
  display: inline-block;
  margin-right: 0.5em;
}
.tip p:first-child,
.note p:first-child,
.warning p:first-child {
  margin-top: 0;
}
.tip p:last-child,
.note p:last-child,
.warning p:last-child {
  margin-bottom: 0;
}

.warning {
  background-color: #f7e7d5;
  border-color: #de9e59;
}
.warning .title {
  background-color: #de9e59;
}

@media (prefers-color-scheme: dark) {
  .tip,
  .note,
  .warning {
    border-color: rgba(255, 255, 255, 0.5);
  }
  .tip .title,
  .note .title,
  .warning .title {
    border-bottom: 1px solid rgba(255, 255, 255, 0.5);
  }
}