HTML Alignment Issue in one machine only (both IE8)

Question

I have the following HTML and CSS code. It works fine in IE8 in one machine; but misaligns in second machine with IE8. What is to be changed in order to correct it?

Answer 1

The IE has a button for Compatibility View, check if the both are checked. This button change the IE compatibility version.

You can set differents css for differents versions: