@media only screen and (min-device-width: 375px) and (max-device-width: 667px) and (orientation : portrait) {
/* iPhone 6 Portrait */
}
@media only screen and (min-device-width: 375px) and (max-device-width: 667px) and (orientation : landscape) {
/* iPhone 6 landscape */
}
@media only screen and (min-device-width: 414px) and (max-device-width: 736px) and (orientation : portrait) {
/* iPhone 6+ Portrait */
}
@media only screen and (min-device-width: 414px) and (max-device-width: 736px) and (orientation : landscape) {
/* iPhone 6+ landscape */
}
@media only screen and (max-device-width: 640px), only screen and (max-device-width: 667px), only screen and (max-width: 480px){
/* iPhone 6 and iPhone 6+ portrait and landscape */
}
@media only screen and (max-device-width: 640px), only screen and (max-device-width: 667px), only screen and (max-width: 480px) and (orientation : portrait){
/* iPhone 6 and iPhone 6+ portrait */
}
@media only screen and (max-device-width: 640px), only screen and (max-device-width: 667px), only screen and (max-width: 480px) and (orientation : landscape){
/* iPhone 6 and iPhone 6+ landscape */
}
You can get list of media queries for all standard devices here