/* Smartphones (portrait and landscape) ----------- */
@media only screen
and (min-device-width : 320px)
and (max-device-width : 480px) {

.img50{max-width:95%;margin-left:auto;margin-right:auto;}
.img75{max-width:95%;margin-left:auto;margin-right:auto;}
.img100{max-width:95%;margin-left:auto;margin-right:auto;}
.img200{max-width:95%;margin-left:auto;margin-right:auto;}
.img250{max-width:95%;margin-left:auto;margin-right:auto;}
.img300{max-width:95%;margin-left:auto;margin-right:auto;}
.img350{max-width:95%;margin-left:auto;margin-right:auto;}
.img400{max-width:95%;margin-left:auto;margin-right:auto;}
.img450{max-width:95%;margin-left:auto;margin-right:auto;}
.img500{max-width:95%;margin-left:auto;margin-right:auto;}
.img550{max-width:95%;margin-left:auto;margin-right:auto;}


}

/* Smartphones (landscape) ----------- */
@media only screen
and (min-width : 321px) {

}

/* Smartphones (portrait) ----------- */
@media only screen
and (max-width : 320px) {

}

/* iPads (portrait and landscape) ----------- */
@media only screen
and (min-device-width : 768px)
and (max-device-width : 1024px) {

}

/* iPads (landscape) ----------- */
@media only screen
and (min-device-width : 768px)
and (max-device-width : 1024px)
and (orientation : landscape) {

}

/* iPads (portrait) ----------- */
@media only screen
and (min-device-width : 768px)
and (max-device-width : 1024px)
and (orientation : portrait) {

}

/* iPad 3 (portrait and landscape) ----------- */
@media only screen
and (min-device-width : 768px)
and (max-device-width : 1024px)
and (-webkit-min-device-pixel-ratio : 2),
only screen
and (min-device-width : 768px)
and (max-device-width : 1024px)
and (min-resolution: 192dpi) {

}

/* Desktops and laptops ----------- */
@media only screen
and (min-width : 1224px) {

}

/* Large screens ----------- */
@media only screen
and (min-width : 1824px) {

}

/* Retina displays ----------- */
@media  only screen
and (-webkit-min-device-pixel-ratio : 2),
only screen
and (min-resolution: 192dpi) {

}