:root {
  /* Make font larger and more readable */
  --base-font-size: 18px;
}

body {
  font-size: var(--base-font-size);
  line-height: 1.6;
}

.markdown-section {
  max-width: 980px;
}

.markdown-section h1 {
  font-size: 2.0em;
  margin: 0.6em 0 0.5em;
}

.markdown-section h2 {
  font-size: 1.5em;
  margin: 1.0em 0 0.5em;
}

.markdown-section h3 {
  font-size: 1.25em;
}

.sidebar {
  font-size: 16px;
}

.sidebar ul li a {
  line-height: 1.5;
}