body{max-width:740px;margin:0 auto;padding:32px 20px 80px;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  font-size:18px;line-height:1.9;color:#1a1a1a;background:#fff;letter-spacing:.01em}
h1{font-size:27px;line-height:1.5;font-weight:700;margin:8px 0 28px;text-align:center}
h2{font-size:21px;font-weight:700;margin:48px 0 20px;padding-left:12px;
  border-left:5px solid #c0392b;color:#111}
p{margin:20px 0}
img{max-width:100%;height:auto;display:block;margin:28px auto;border-radius:8px;
  box-shadow:0 2px 14px rgba(0,0,0,.08)}
a{color:#c0392b;text-decoration:none;border-bottom:1px solid rgba(192,57,43,.35)}
blockquote{margin:20px 0;padding:8px 18px;border-left:3px solid #ddd;color:#555;background:#fafafa}