Media queries

I develop version for smartphones for some project and use this plugin.
All styles compiles from pixels to rems, only base css rules are left in px, like this:

``` css
html { // for desktop
font-size: 14px;
}
@media (max-width: 500px) { // for phones
html {
font-size: 11px;
}
}
```

Generally it is good, fast and simple solution to make mobile version.
But for some ui blocks I use media queries overrides for small screen. And I want to keep this values in pixels. It will be good to have ability to ignore css rules in media queries (not there – @media (max-width: 500px) )