form {
    width: 300px;
    padding: 20px;
    background: #f4f4f4;
    border-radius: 12px;
    box-shadow: 0 0 10px rgba(0,0,0,0.15);
    display: flex;
    flex-direction: column;
    gap: 15px;
    font-family: Arial, sans-serif;
}

form input[type="number"] {
    padding: 10px;
    border: 2px solid #ccc;
    border-radius: 8px;
    font-size: 16px;
    outline: none;
    transition: 0.2s ease-in-out;
}

form input[type="number"]:focus {
    border-color: #1a73e8;
    box-shadow: 0 0 5px rgba(26,115,232,0.4);
}

form input[type="submit"] {
    padding: 10px;
    background: #1a73e8;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
    transition: 0.3s;
}

form input[type="submit"]:hover {
    background: #1558b0;
}