How to center the Logo?

Hi, I recently bought Clean Portfolio Pro Theme - I'm still playing around in Live Preview mode, haven't really activated it yet. I have a few questions : 1. How to center the Logo? I don't want to put site title and tagline, instead, I want a logo image on top of my homepage. I went to Site Identity > upload a logo. Now the logo can only stay on the left side, I wonder if it's possible to be in the center (both on desktop and mobile version) by adding CSS. Current screenshot of my homepage is like this : https://ibb.co/m85FB87 2. The location of "Social Icons" I can see on your demo, the social icons are on the left of the search box (https://ibb.co/ctNxNW7), but my social icons are down below the drop down menu (https://ibb.co/vPwmXN0), I wonder if there's any way that I can change the location of social icons - just like how it looks on your demo. 3. Increase the Height of Header Image Is it possible to increase the height of the header image? I want it to look bigger on the screen. (https://ibb.co/42xrYW6) 4. Font Problem I went to Theme Options > Font Family Options to select different fonts and want to see how it looks, but no matter which font I chose, the live preview just looks the same. How can this be? Thank you for helping.