I'm not expert in styling, I'm using bootstap for small projects.
So, my problem is the grid system. I have two monitors, first has 1920x1080 resolution and second has 1366x768.
I want say with mediaquery if the resolution is 1366x768 use the grid system of md not lg

For example I have a div as in the below

```
<div class="col-lg-9 col-md-6">
....
</div>

div class="col-lg-3 col-md-6">
...
</div>

```

Is it possible?