body{margin:0;font:16px/1.65 -apple-system,"Segoe UI",Roboto,sans-serif;color:#1d1d1f;background:#fff}
main{max-width:620px;margin:12vh auto;padding:0 20px}
h1{font-weight:600;letter-spacing:-.01em}
.muted{color:#86868b;font-size:.9em}
a{color:#0066cc}