body {
  max-width: 760px;
  margin: 32px auto;
  padding: 0 20px;
  font-size: 18px;
  line-height: 1.5;
}

nav,
h1 {
  text-align: center;
}

nav {
  margin-bottom: 24px;
}

h1,
h2,
h3 {
  line-height: 1.25;
}

h2 {
  margin-top: 40px;
}

h3 {
  margin-top: 28px;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 24px auto;
}

.screenshot-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin: 24px 0;
}

.screenshot-pair figure {
  min-width: 0;
  margin: 0;
}

.screenshot-pair img {
  width: 100%;
  max-width: 360px;
  margin: 0 auto 12px;
}

.screenshot-gallery {
  grid-template-columns: minmax(0, 1fr);
}

.screenshot-gallery figure {
  width: 100%;
  max-width: 360px;
  justify-self: center;
}

@media (max-width: 640px) {
  .screenshot-pair {
    grid-template-columns: minmax(0, 1fr);
  }
}