body{color:#17202a;background:#f8f9fa;margin:0;font-family:system-ui,sans-serif}main{max-width:60rem;margin:3rem auto;padding:1.5rem}section{margin-block:2rem}article{background:#fff;border:1px solid #dbe2e8;border-radius:.5rem;margin-block:1rem;padding:1rem}button,input,a{margin:.3rem}button{cursor:pointer;padding:.5rem .8rem}[role=alert]{color:#a11}