navigation css stlye problem

Hi,

I have this web that is on construction now … almost finished I hope.

I just discovered that on some browsers the navigation menu looks weird. I just styled the link hover visited on my child’s css and it miss aligns on the styled menu items and this is driving me nuts.

On ipad browsers like Safari and Chrome it really looks ugly. I would like to know what is happeniing

This is the site

Any help would be much appreciated.