Header Image and CSS Help

Just added a new logo and now having some issues with the header.

https://www.medicalmarijuanastrains.com/

1. How do I move the logo up to match the twitter logo in the header? (they are the same height)

— I added this to my .css and no luck

.Medical-Marijuana {
padding-top:10px;
margin-right:20px;
margin-left:50px;
display:block;
}

2. When I added the logo, the navigation box in the header added a blank box. How do I remove this or will it remove it self once the logo is css and aligned correctly?

3. I added the logo to the header.php, I noticed it only shows up on the home page and not other pages. How do I get the logo to show up on all the pages?

— https://www.medicalmarijuanastrains.com/strawberry-cough/

4. What is the proper way to make the logo link to the home page? When the logo is linked to to the home page it adds a big line through the middle of the template. (I had to remove this, so no example online)

Thanks in advance for the help! ??