body { background:linear-gradient(to right, #ff7e5f, #feb47b);color:#333;} .card { border-radius:10px;border:none;background-color:#ffffff;} .card-title { color:#fff;background-color:#6a11cb;padding:10px;border-radius:10px;} .btn-primary { background-color:#6a11cb;border-color:#6a11cb;} .btn-primary:hover { background-color:#5a09a8;border-color:#5a09a8;} #result { font-size:1.25rem;font-weight:bold;color:#000;background-color:#fff;padding:10px;border-radius:5px;border:1px solid #ddd;}