Site Title and Tagline Font

How do I change the Site Title and Tagline fonts and font size?
Thanks in advance,

Hi Victoria,

I hope you are well today and thank you for your question.

You can try achieving this by adding the following CSS code in the Custom CSS option of your theme on the below path.

Admin Area -> Appearance -> Customize -> Activello Options -> Other -> Custom CSS

#logo a.navbar-brand {
    font-size: 28px;
    font-family: serif;
#logo .tagline {
    font-size: 12px;
    font-family: sans-serif;

Please change the font size and font family in the above code to whatever you want to.

Best Regards,