div {
-webkit-transition: linear;
-moz-transition: linear;
-o-transition: linear;
-ms-transition: linear;
transition: linear;
}
Also, would be nice if Prefixr sorted prefixed lines a bit different -- make it easier for eyes to catch errors. Just swap -ms- and -o- lines:
div {
-webkit-transition: linear;
-moz-transition: linear;
-ms-transition: linear;
-o-transition: linear;
transition: linear;
}

