The issue can be observed here:

It doesn’t work on emulated ie7 (ie9 -> developer tools).
I tried with many css settings, but probably not with all of them, as I believe there is some solution for this bug.
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
Its in quirks mode. Apply a proper doctype.
And if you using developer tools,
Change document mode to ie7 standards