CSS hacks for IE10 & IE11

How to specify CSS hacks for IE10 & IE11 ?

Selector Hacks:

Internet Explorer ≥ 10
_:-ms-input-placeholder, :root .selector {}

Internet Explorer ≥ 11
_:-ms-fullscreen, :root .selector {}

Media Query Hacks:

Internet Explorer ≥ 10
@media screen and (-ms-high-contrast: active), 
(-ms-high-contrast: none) {
/*define styles  here*/
}