promotion headline button color change

I'd like to change the color of the promotion headline button as it displays on my site http://borderpartners.org/bp/ from current color to #009bff with bolded button text white. (The color can remain default during hover and click. I only need the button to normally show #009bff) This code didn't work for colors, only for bold:

a.promotion-button {
    background-color: #009bff;
    color: white;
    font-weight: bold;
}

Can you help me?