That is the view on my screen, a quick analysis of your page source shows that the container has a fixed width of 700px, but that the computed style is returning a total of 702px for all the contents of the spans.
This may be because your font size is forcing the containers to expand ever so slightly, try a 0.9em size compared to your general font size to see if this fixes the issue.
fonts are probably messed up on windows :) Thank you Shane for the feedback and for the time you spent to respond. I will just use a regular font instead...Still cant change a clients opinion :) she still likes the other one more ... dont have enought responds here :(