Email field on wrong position

Hey there.
I have a style problem. The box/field of the email pushes itself always to the right. Never under “E-Mail” or whatever. I linked you a picture, so that you know what I mean.

Same happens if I take the standard-code. No matter what I do or where I put the email code – the result is always the same.
All the other fields/boxes are right. So what’s wrong here?

http://wordpress.org/extend/plugins/contact-form-7/