In IE9 Browser, a page is not displayed properly. Using developer toolbar I have found the following screenshot in which it displays
Browser Mode:IE9 Compat View
Document Mode : IE7 standards
If I force the browser to
Browser Mode : IE9
DOucment Mode : IE9 Standard
Then it display properly.
How can I show the page properly without forcing the browser to IE9 mode.

Ah… Internet Explorer didn’t support HTML5 until IE9. Add this to the header:
Also, add an HTML5 reset style sheet like this one:
http://html5doctor.com/html-5-reset-stylesheet/