* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: #f5f5f5;
  color: #171717;
  font-family: Arial, sans-serif;
  line-height: 1.8;
}

main {
  width: min(820px, calc(100% - 32px));
  margin: 48px auto;
  padding: 32px;
  background: #fff;
  border: 1px solid #e5e5e5;
  border-radius: 20px;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  padding-bottom: 20px;
  border-bottom: 1px solid #eee;
}

a {
  color: #171717;
  text-underline-offset: 4px;
  overflow-wrap: anywhere;
}

h1, h2 {
  line-height: 1.4;
}

h2 {
  margin-top: 28px;
  font-size: 20px;
}

.muted {
  color: #666;
}

footer {
  margin-top: 32px;
  padding-top: 16px;
  border-top: 1px solid #eee;
}

@media (max-width: 600px) {
  main {
    margin: 16px auto;
    padding: 20px;
  }
}