body{margin:0 auto;max-width:720px;padding:24px 16px;font:16px/1.7 -apple-system,"PingFang SC","Microsoft YaHei",sans-serif;color:#2b2b2b;background:#f7f5f0}
header{border-bottom:2px solid #6b8f71;margin-bottom:24px}
h1{font-size:28px;margin:0 0 4px;color:#3f5e45}
h2{font-size:19px;margin:20px 0 6px;color:#3f5e45}
article{padding:4px 0 12px;border-bottom:1px dashed #cfc8b8}
footer{margin-top:32px;font-size:13px;color:#888}