csslint error in ui-grid.css: ms-keyframes

[FloMaetschke]

It seems there is a problem with csslint and ui-grid.css (compiled from animation.less).

@-ms-keyframes ui-grid-spin {
  0% {
    -moz-transform: rotate(0deg);
    -o-transform: rotate(0deg);
    -webkit-transform: rotate(0deg);
    transform: rotate(0deg);
  }
  100% {
    -moz-transform: rotate(359deg);
    -o-transform: rotate(359deg);
    -webkit-transform: rotate(359deg);
    transform: rotate(359deg);
  }
}

This results in an error when running csslint.
"Unknown @ rule: @-ms-keyframes."

I suggest removing it should fix it.

[AgDude]

This file was copied directly from fontello. It also looks like this has been addressed by cssLint: CSSLint/csslint#295