This issue occurs usually on pages designed using the quirks mode technique regarding the compatibility with older browsers.
How to find out in IE if quirks mode is used in a particular page?
Open the particular page using Internet Explorer and press F12 - the developer tools of Internet Explorer will open. There you will see in the bottom right corner concerning Document Mode: Quirks mode (Page default)
In the source code of your page you have to change the DOCTYPE in a way, that the quirks mode is not set anymore:
- there must be no comment or xml declaration before the DOCTYPE definition of a website
- use proper DOCTYPE definition.
The most common and most effective DOCTYPE definition is: