title: How do I differentiate between IE versions 6 to 10 using IE CSS Hacks?
body: <p>I am working on a web design that uses Bootstrap and so I'm customizing the Bootstrap framework.
  I have designed an element that because of lack of support for transitions in IE9, lack of support for some features like opacity and some others in IE8 and lack of support for box-sizing, correct position:absolute positioning and other problem, I need a way to differentiate  between IE versions right from CSS style sheets, because I'm customizing the Bootstrap framework, I prefer a single complete .css framework file so, here is the question:</p>
  
  <p><strong>How do I differentiate between IE versions 6 to 10 using IE CSS Hacks on a single CSS role?</strong></p>