*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:system-ui,sans-serif;background:#f9fafb;color:#111827;min-height:100vh;display:flex;align-items:center;justify-content:center}.container{text-align:center;padding:2rem}h1{font-size:2rem;margin-bottom:.5rem}