@media onlyscreenand (min-device-width:320px){

//針對iPhone3

}

@media?onlyscreenand?(min-device-width:320px)and?(-webkit-min-device-pixel-ratio:2)?{

//針對iPhone4,5c,5s,?所有iPhone6的放大模式，個別iPhone6的標準模式

}

@media?onlyscreenand?(min-device-width:375px)and?(-webkit-min-device-pixel-ratio:2)?{

//針對大多數(shù)iPhone6的標準模式

}

@media?onlyscreenand?(min-device-width:375px)and?(-webkit-min-device-pixel-ratio:3)?{

//針對所有iPhone6+的放大模式

}

@media?onlyscreenand?(min-device-width:412px)?and?(-webkit-min-device-pixel-ratio:3)?{

//針對所有iPhone6+的標準模式,414px寫為412px是由于三星Nexus6為412px，可一并處理

}