Using a Simple Paypal Button

Using Neve theme, I am setting up a simple single item Paypal pay button. when I create a dropdown menu through Paypal for the buyer to select a quantity, the window displayed for this shows very light gray letters against a white background. If the buyer selects the drop down, the list of numbers to select is fine – black type on a white background.

I know has to be some additional CSS code that needs to be added in order to display the initial window with black type on a white background.

Dees anyone have any suggestions as to what that code should be?

Here are two examples I have placed in DropBox that represents the issue issue –

1 – How it looks when online https://www.dropbox.com/scl/fi/jfso7vn16978rsthzulx5/Neve-howItLooksOnline.png?rlkey=v8sxzwegfil08g9b4nq8fmfgi&dl=0

The box below “Select Quantity: is barely visible with a light gray font color – I would like this to be black font color

2 – How it looks when I am composing the page https://www.dropbox.com/scl/fi/qt5aezzwr7wook5hfs3wx/Neve-HowItLooksWhenComposing.png?rlkey=h45x9ke5mops66rxx8hxlsgf9&dl=0

When I compose the page, it actually looks the way I want it to look – but when the page is saved, I am not getting what is shown.

The page I need help with: [log in to see the link]