body {
  font-family: sans-serif;
  font-size: 1rem;
  line-height: 1.5;
  display: flex;
  justify-content: center;
  --primary-color: oklch(59.6% 0.145 163.225);
}

main {
  max-width: 50rem;
  padding: 1rem;
}

img {
  width: 100%;
}

h1 {
  text-align: center;
}

h3, details > summary {
  color: var(--primary-color);
  font-weight: bold;
  font-size: 1.2rem;
}

details {
  margin-block: 1.5rem;
}
details > * {
  display: block;
}
details > summary {
  display: list-item;
}
details > h4 {
  margin-block: 1rem 0.5rem;
}