:root{font-family:Arial,sans-serif;line-height:1.6;color:#222;background:#f7f7f7;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box}body{margin:0;padding:0;background:#f7f7f7;color:#222}#root{min-height:100vh}.app-shell{max-width:700px;margin:0 auto;padding:24px}header,main,footer{max-width:700px;margin:0 auto;padding:24px}header{background:#fff;margin-top:24px;border-bottom:2px solid #ddd;border-radius:8px 8px 0 0}main{background:#fff;padding-top:0}h1,h2,h3{margin-top:0}.posts article{background:#fff;padding:16px;margin-bottom:16px;border:1px solid #ddd;border-radius:6px}footer{font-size:.9em;color:#666;padding-bottom:32px}