CSS to change button font

All websites in South Africa have been mandated by government under emergency regulations to add landing page text pointing to the national CoronaVirus website. WPFront Notification Bar is *perfect* for this.

However, I wish to make the notification bar font size the same for the text and button, but the CSS below is not changing the button font:

#wpfront-notification-bar {
font-family: Tahoma, Verdana, Segoe, sans-serif;
font-size:16px;
}

#wpfront-notification-bar div.wpfront-button {
font-family: Tahoma, Verdana, Segoe, sans-serif;
font-size:16px;
}

What is the correct CSS please?

Thanks