*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;line-height:1.6;padding:2rem}main{max-width:1200px;margin:0 auto}h1{margin-bottom:1rem;color:#333}p{color:#666}