Quelques mediaqueries pratiques pour le responsive

/* #### Mobile Phones Portrait #### */
@media screen and (max-device-width: 480px) and (orientation: portrait){
/* some CSS here */
}

/* #### Mobile Phones Landscape #### */
@media screen and (max-device-width: 640px) and (orientation: landscape){
/* some CSS here */
}

/* #### Mobile Phones Portrait or Landscape #### */
@media screen and (max-device-width: 640px){
/* some CSS here */
}

/* #### iPhone 4+ Portrait or Landscape #### */
@media screen and (min-device-width: 320px) and (-webkit-min-device-pixel-ratio: 2){
/* some CSS here */
}

/* #### iPhone 5 Portrait or Landscape #### */
@media (device-height: 568px) and (device-width: 320px) and (-webkit-min-device-pixel-ratio: 2){
/* some CSS here */
}

/* #### iPhone 6 and 6 plus Portrait or Landscape #### */
@media (min-device-height: 667px) and (min-device-width: 375px) and (-webkit-min-device-pixel-ratio: 3){
/* some CSS here */
}

/* #### Tablets Portrait or Landscape #### */
@media screen and (min-device-width: 768px) and (max-device-width: 1024px){
/* some CSS here */
}

/* #### Desktops #### */
@media screen and (min-width: 1024px){
/* some CSS here */
}

En cas de problème sur l’iphone: essayer cette méthode:

Dans le header: ajouter