/* Imagenes y QR: sin menu de mantener presionado (iPhone y Android), sin arrastrar ni seleccionar */
img, svg, canvas, a, button {
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}
img { -webkit-user-drag: none; user-drag: none; pointer-events: none; }
input, textarea { -webkit-user-select: text; user-select: text; -webkit-touch-callout: default; }