Hello,

I've been using webpack with cssnext-loader quite often recently and I've noticed that it doesn't seem to add the browser prefix for keyframes declarations unless a 0% or from keyframe is present.

Examples below

Doesn't work

@keyframes {
   to { opacity: 1; }
}

compiles to:

@keyframes {
   to { opacity: 1; }
}

Works

@keyframes {
   from { opacity: 0; }
   to { opacity: 1; }
}

compiles to:

@-webkit-keyframes {
   from { opacity: 0; }
   to { opacity: 1; }
}
@keyframes {
   from { opacity: 0; }
   to { opacity: 1; }
}

Anyone else experienced this?

I've tried setting compress: false and also cssloader.aggressiveMerging: false

Thanks