marijnh/CodeMirror — pull request #2161 by peterkroon (2014-01-20 15:54:30+00:00)
Title: [css] implement @keyframes

````css
h1 {
animation-duration: 3s;
animation-name: slidein;
}

@keyframes slidein {
from {
margin-left: 100%;
width: 300%;
}

to {
margin-left: 0%;
width: 100%;
}
}
````