Need code to update header

Hello,
Several years ago I obtained the Tribune theme (WPZoom). I was not happy with that theme, so I had a contractor customize it.

I want to reduce the height of the header in my customized Tribune theme without encroaching on my logo and tagline. I found some code in the Forum that MAY work but I don’t know if it is correct or where to place the code. Please tell me how to make the change and provide the exact code. My test website is testing.laughandheal.com.

Finally, I want to remove the string ‘Authority: ‘ from the tagline. The contractor must have hardcoded the tagline because it does not show in the tagline parameter of the theme. I ran a search of the public_html folder for the string but to no avail. Please tell me where I might find the string.
Thank you very much.

Regards,
Steve