peterbe/mincss — pull request #25 by sullerandras (2014-08-31 06:13:43+00:00)
Title: Demonstrate issue 17

I ran into the same issue as #17 , so I created a small test case for it. The problematic css was this in my case:
```
@media screen and (max-width: 400px) {
@-ms-viewport {
width: 320px;
}
}
```
This is from Bootstrap 3.0.0. The latest Bootstrap (3.2.0) seems to be ok with mincss.