body{margin:0;font-family:Arial;background:#1d2127;color:#fff}header{text-align:center;padding:25px;background:#2b313b}main{max-width:800px;margin:20px auto}.card{background:#303845;padding:20px;border-radius:12px;margin:15px}input,button{width:100%;padding:10px;margin:8px 0;border-radius:8px;border:none}button{background:#2d7ff9;color:#fff}li{display:flex;justify-content:space-between;background:#222;padding:10px;border-radius:8px;margin:8px 0}.deleteBtn{width:auto;background:#c62828}