Media queries

I am working on an app for all ios devices with a lot of costum graphic.
So my media queries will be extensive.
It would by nice to have a snippet here on this great forum.

This is just the beginning

// Ipad design - Genereal
@media only screen and (min-device-width: 500px) {
@media only screen and (min-device-width: 320px) {
// Iphone design - Genereal
@media only screen and (min-device-width : 375px) 
    and (max-device-width : 667px) 
    and (orientation : portrait) 
    and (-webkit-min-device-pixel-ratio : 2)
 // Iphone 6 portrait design

If you have any ideas or if something like this already exists for ionic please let me know :slight_smile: