styles.css

html {
  color-scheme: light dark;
  font-family: monospace;

  scroll-behavior: smooth;
  scroll-padding-top: 20px;
}

body {
  padding-block: 20px;
  padding-inline: 20px;
}

@media (min-width: 1024px) {
  body {
    padding-inline: calc((100dvw - 1000px) / 2);
  }
}

mark {
  background: none;
  color: unset;
  text-decoration: underline;
  padding-inline: 0;
  text-decoration-color: skyblue;
  text-decoration-thickness: 3px;
  text-underline-offset: 8px;
}

h1 {
  font-size: 300%;

  mark {
    background-color: darksalmon;
    padding-inline: 10px;
    text-decoration: none;
    color: initial;
  }
}

h2 {
  font-size: 200%;

  mark {
    background-color: skyblue;
    padding-inline: 10px;
    text-decoration: none;
    color: initial;
  }
}

h3 {
  font-size: 150%;
  text-decoration: underline;
}

p,
.section-link {
  font-size: 150%;
  text-wrap: pretty;
  line-height: 1.6em;
}

p {
  opacity: 0.7;
}

button {
  width: fit-content;
  height: fit-content;
  aspect-ratio: 1 / 1;
  padding: 0;
}

header {
  display: flex;
  justify-content: space-between;
}

.mb-50 {
  margin-bottom: 50px;
}