*{box-sizing:border-box}body{margin:0;font-family:system-ui,sans-serif}main{max-width:640px;margin:0 auto;padding:16px}label{margin:8px 0;display:block}input[type=email],input[type=password],select{width:100%;padding:8px;display:block}button{padding:8px 16px}header{flex-wrap:wrap;align-items:center;gap:12px;display:flex}ul{padding-left:0;list-style:none}li{overflow-wrap:anywhere;border-bottom:1px solid #ddd;padding:8px 0}.warn{color:#8a5a00}[role=alert]{color:#b00020}