For a more professional look, use higher res or vector graphics. Parts of the page (including the fixed header) look blurry, even on my phone with a relatively

For a more professional look, use higher res or vector graphics. Parts of the page (including the fixed header) look blurry, even on my phone with a relatively moderate by todays standards 1024px wide screen. I might be very particular about this, but I find it almost painful to look at the page for this reason.