body { font: 16px/1.5 -apple-system, system-ui, sans-serif; max-width: 42rem; margin: 3rem auto; padding: 0 1rem; color: #222; background: #fff; }
h1 { font-size: 1.4rem; }
code { background: #f3f3f3; padding: .1em .3em; border-radius: 3px; }
nav a { margin-right: 1rem; }
footer { margin-top: 3rem; font-size: .85rem; color: #666; }