:root{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;line-height:1.5;font-weight:400;color:#111827;background-color:#f9fafb}*{box-sizing:border-box}body{margin:0}.app{min-height:100vh;display:grid;place-content:center;text-align:center;padding:2rem}h1{margin-bottom:.5rem}