body {
  font-family: Arial, Helvetica, sans-serif;
  padding: 1rem;
}

nav {
  justify-content: flex-end;
  display: flex;
  font-size: 0.875em;
  gap: 0.5rem;
  max-width: 1024px;
  margin: 0 auto;
  padding: 1rem;
}

nav a {
  display: inline-block;
}

main {
  max-width: 1024px;
  margin: 0 auto;
}

.notice {
  color: green;
}

section.product {
  display: flex;
  gap: 1rem;
  flex-direction: row;
}

section.product img {
  border-radius: 8px;
  flex-basis: 50%;
  max-width: 50%;
}