@media
only screen and (-webkit-min-device-pixel-ratio: 2) ,
only screen and (   min--moz-device-pixel-ratio: 2) ,
only screen and (     -o-min-device-pixel-ratio: 2/1) ,
only screen and (        min-device-pixel-ratio: 2) ,
only screen and (                min-resolution: 192dpi) ,
only screen and (                min-resolution: 2dppx) { 

}



@media
only screen and (-webkit-min-device-pixel-ratio: 2)      and (max-width: 959px),
only screen and (   min--moz-device-pixel-ratio: 2)      and (max-width: 959px),
only screen and (     -o-min-device-pixel-ratio: 2/1)    and (max-width: 959px),
only screen and (        min-device-pixel-ratio: 2)      and (max-width: 959px),
only screen and (                min-resolution: 192dpi) and (max-width: 959px),
only screen and (                min-resolution: 2dppx)  and (max-width: 959px) { 

}



@media
only screen and (-webkit-min-device-pixel-ratio: 2)      and (max-width: 767px),
only screen and (   min--moz-device-pixel-ratio: 2)      and (max-width: 767px),
only screen and (     -o-min-device-pixel-ratio: 2/1)    and (max-width: 767px),
only screen and (        min-device-pixel-ratio: 2)      and (max-width: 767px),
only screen and (                min-resolution: 192dpi) and (max-width: 767px),
only screen and (                min-resolution: 2dppx)  and (max-width: 767px) { 

}




@media
only screen and (-webkit-min-device-pixel-ratio: 2)      and (max-width: 479px),
only screen and (   min--moz-device-pixel-ratio: 2)      and (max-width: 479px),
only screen and (     -o-min-device-pixel-ratio: 2/1)    and (max-width: 479px),
only screen and (        min-device-pixel-ratio: 2)      and (max-width: 479px),
only screen and (                min-resolution: 192dpi) and (max-width: 479px),
only screen and (                min-resolution: 2dppx)  and (max-width: 479px) { 

}