*{box-sizing:border-box}body{font-family:system-ui,sans-serif;max-width:640px;margin:0 auto;padding:1.5rem;line-height:1.6}h1{font-size:1.5rem}code{background:#f0f0f0;padding:.2em .4em;border-radius:4px}pre{background:#f5f5f5;padding:1rem;overflow:auto;border-radius:6px}.example{margin:1rem 0}.example img{vertical-align:middle;margin-right:.5rem}