janzikan

/**
 * Resize image - preserve ratio of width and height.
 * @param string $sourceImage path to source JPEG image
 * @param string $targetImage path to final JPEG image file
 * @param int $maxWidth maximum width of final image (value 0 - width is optional)
 * @param int $maxHeight maximum height of final image (value 0 - height is optional)
 * @param int $quality quality of final image (0-100)
 * @return bool
 */
function resizeImage($sourceImage, $targetImage, $maxWidth, $maxHeight, $quality = 80)

jsoverson

.visible-android {
  display:none;
}
.visible-ios {
  display:none;
}
.on-device .visible-android, .on-device .visible-android {
  display:inherit;
}
.device-ios .visible-android {

needim

/*
  Based on:
  1. http://stephen.io/mediaqueries
  2. https://css-tricks.com/snippets/css/media-queries-for-standard-devices/
*/

/* iPhone X in portrait & landscape */
@media only screen 
and (min-device-width : 375px) 
and (max-device-width : 812px)