body{font:16px/1.6 system-ui,sans-serif;margin:0;color:#222;background:#fafafa}
header{padding:3rem 1.5rem;background:hsl(164,45%,32%);color:#fff}
header h1{margin:0 0 .5rem;font-weight:600}header span{opacity:.7;font-weight:400}
main{max-width:44rem;margin:2rem auto;padding:0 1.5rem}
article{margin-bottom:1.5rem;padding-bottom:1.5rem;border-bottom:1px solid #ddd}
footer{padding:2rem 1.5rem;text-align:center;color:#888}