input ```css .grid-cell { grid-column: span 6; } ``` expected output ```css .grid-cell { -ms-grid-column-span: 6; grid-column: span 6; } ``` current output: (and it warns you not to use this syntax) ```css .grid-cell { grid-column: span 6; } ```
input
expected output
current output: (and it warns you not to use this syntax)