body {
    font-family: 'Segoe UI', sans-serif;
    background: #f9f9f9;
    margin: 0;
    padding: 20px;
}
.container {
    max-width: 600px;
    margin: auto;
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}
label {
    font-weight: bold;
    margin-top: 10px;
    display: block;
}
input[type="text"], input[type="number"] {
    width: 100%;
    padding: 10px;
    margin-top: 5px;
    border: 1px solid #ccc;
    border-radius: 5px;
}
button {
    width: 100%;
    padding: 12px;
    background: #007BFF;
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    margin-top: 15px;
    cursor: pointer;
}
button:hover {
    background: #0056b3;
}
@media (max-width: 600px) {
    .container {
        padding: 15px;
    }
    h2 {
        font-size: 20px;
    }
}