How to change button color?

Hi Community!

First and foremost, thank you an awesome plugin! It really serves the purpose that I needed!

So, to the question. I am running the website https://laanepartner.dk/ and I am currently trying to implement the “Helpful” plugin into my blog posts. However, I wish to customize the color of the “Flat” theme. How do I do that?

I’ve tried adding the following custom CSS, but nothing changes?

.button.helpful-pro.helpful-button {
    background-color: #46813C;
}

Please help me out, I need it for both the pro button and the contra button. Additionally, is it possible to add icons to the buttons? If so, how?

Thank you so much in advance!

• This topic was modified 4 years, 11 months ago by phell. Reason: Needed to add another question

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