Hi,
I have 3 years of experience of cross browser compatibility.
Since, you have mentioned Safari, i guess your fonts are behaving crazy.
Your website shows horizontal scrolls for width less than 960px. CSS work needs to be done for lower width devices.
My previous employers for cross browser issues were highly satisfied. You can see my reviews.
I am new to freelancer.com. But quality work is assured.
With regards,
Rahul