CSS "pointer-events" wrongly highlighted/colored

ubuntu 16.04, gedit 3.18.3

open new document, paste this CSS
.green-bar{
 pointer-events: none;
 background: #8abf00;
 z-index:1;
 height: 8px;
 position: absolute;
 top: 9px;
 border-radius: 20px;"
}

pointer-events: should be with bold red but it's not, it's like gedit doesn't recognize that specific CSS keyword. the rest are ok background, z-index etc.

https://developer.mozilla.org/en-US/docs/Web/CSS/pointer-events