* {
  box-sizing: border-box;
}

html {
  --brand-dark: #63045f;
  --brand-mid: #75208c;
  --brand-light: #fba0ff;
  --charcoal: #333;
  --max-w: 700px;
  font-size: 1.25em; /* == 20px since default is 16px */
}

body {
  display: grid;
  grid-template: auto 1fr auto / 1fr;
  line-height: 1.6;
  font-family: system-ui, sans-serif;
  color: var(--charcoal);
  padding: 0;
  margin: 0;
  min-height: 100vh;
  gap: 20px;
}

header,
main,
footer {
  grid-column: 1;
  width: 100%;
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
}
header > *,
main > *,
footer > * {
  width: 100%;
  padding: 0 10px;
  max-width: var(--max-w);
}

header {
  background: var(--brand-light);
  grid-row: 1;
}
header > h1 {
  margin: 10px 0;
}
main {
  grid-row: 2;
}
footer {
  grid-row: 3;
  text-align: end;
  padding: 10px 0;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  line-height: 1.2;
  font-family:
    Rockwell, "Rockwell Nova", "Roboto Slab", "DejaVu Serif", "Sitka Small",
    serif;
}
h1 {
  margin: 1.5rem 0;
}
h2,
h3,
h4,
h5,
h6 {
  margin: 0.5rem 0;
}
p {
  line-height: 1.2;
  margin: 0.5rem 0;
}
article {
  margin: 1.2rem 0;
}

.example-screenshot {
  display: block;
  margin: 10px;
  padding: 2px;
  border: 1px var(--charcoal) solid;
  border-radius: 4px;
}