blurred logo

Hi,

I have tried to upload my graphic logo in the theme many times but it is always blurred.
The logo is a graphic that a friend made for me and for my website, so I tried with the PNG kind and the JPG. It was too big so I had to scale back the image on Photoshop, I have tried to increase the resolution and then to decrease it, but it didn’t work.

How can I do? If you check, the graphic logo is still blurred on my website.

Thank you

The page I need help with: [log in to see the link]