/* = Tablette - Portrait */
@media only screen and (min-width: 600px) and (max-width: 939px),only screen and (max-device-width : 1024px) and (orientation : portrait) {
   .contenu {width: 600px;}
}
/* = Mobile - Paysage */
@media only screen and (min-width:500px) and (max-width: 599px), only screen and (max-device-width : 480px) and (orientation : landscape) {
   .contenu {width: 500px;}
}
/* = Mobile - Portrait */
@media only screen and (max-width: 499px), only screen and (max-device-width : 480px) and (orientation : portrait) {
   html, body {min-width: 320px;}
   .contenu {width: 310px;}
}
/* = Mobile - Peu importe l'orientation */
@media only screen and (max-width:599px), only screen and (max-device-width : 480px) {
}